WordNet

relating to or associated with the neck
of or relating to the cervix of the uterus; "cervical cancer"
necklike opening to the uterus (同)uterine_cervix, cervix_uteri
a hollow muscular organ in the pelvic cavity of females; contains the developing fetus (同)womb

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(子宮などの)頚(けい)部の(にできた)
《所有・所属》…『の』,…のものである,…に属する・《材料・要素》…『でできた』,から成る・《部分》…『の』[『中の』] ・《数量・単位・種類を表す名詞に付いて》…の・《原因・動機》…『で』,のために(because of) ・《主格関係》…『の』,による,によって・《目的格関係》…『を』,の・《同格関係》…『という』・《関係・関連》…『についての』[『の』],の点で・《抽象名詞などと共に》…の[性質をもつ] ・《『It is』+『形』+『of』+『名』+『to』 doの形で,ofの後の名詞を意味上の主語として》・《分離》…『から』・《起原・出所》…『から』[『の』](out of) ・《『名』+『of』+『a』(『an』)+『名』の形で》…のような・《『名』+『of』+『mine』(『yours, his』など独立所有格)の形で》…の…・《時》(1)《副詞句を作って》…に《形容詞句を作って》…の・《時刻》《米》…前(to,《米》before)
(器官の)頚(けい)部,(特に子宮の)頚管
子宮(womb)
OLD French古[代]フランス語

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/09/16 03:13:36」(JST)

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The cervix or cervix uteri (Latin: neck of the uterus) is the lower part of the uterus in the human female reproductive system. In a non-pregnant woman, the cervix is usually between 2 and 3 cm long and roughly cylindrical in shape. The narrow, central cervical canal runs along its entire length, connecting the uterine cavity and the lumen of the vagina. The opening into the uterus is called the internal os and the opening into the vagina is called the external os. The lower part of the cervix, known as the vaginal portion of the cervix (or ectocervix), bulges into the top of the vagina. The cervix has been documented anatomically since at least the time of Hippocrates, over 2,000 years ago.

The cervical canal is a passage through which sperm must travel to fertilize an egg cell after sexual intercourse. Several methods of contraception, including cervical caps and cervical diaphragms aim to block or prevent the passage of sperm through the cervical canal. Cervical mucus is used in several methods of fertility awareness, such as the Creighton model and Billings method, due to its changes in consistency throughout the menstrual period. During vaginal childbirth, the cervix must flatten and dilate to allow the fetus to progress along the birth canal. Midwives and doctors use the extent of the dilation of the cervix to assist decision-making during childbirth.

The endocervical canal is lined with a single layer of column-shaped cells, while the ectocervix is covered with multiple layers of cells topped with flat cells. The two types of epithelia meet the squamocolumnar junction. Infection with the human papillomavirus (HPV) can cause changes in the epithelium, which can lead to cancer of the cervix. Cervical cytology tests can often detect cervical cancer and its precursors, and enable early successful treatment. Ways to avoid HPV include avoiding sex, using condoms, and HPV vaccination. HPV vaccines, developed in the early 21st century, reduce the risk of cervical cancer by preventing infections from the main cancer-causing strains of HPV.^[1]

Structure

Diagram of the uterus and part of the vagina. The cervix is the lower part of the uterus situated between the external os (external orifice) and internal os (internal orifice). The endocervical canal connects the interior of the vagina and the cavity of the body of uterus.

The cervix is part of the female reproductive system. Around 2–3 centimetres (0.8–1.2 in) in length,^[2] it is the lower narrower part of the uterus continuous above with the broader upper part—or body—of the uterus.^[3] The lower end of the cervix bulges through the anterior wall of the vagina, and is referred to as the vaginal portion of cervix (or ectocervix) while the rest of the cervix above the vagina is called the supravaginal portion of cervix.^[3] A central canal, known as the cervical canal, runs along its length and connects the cavity of the body of the uterus with the lumen of the vagina.^[3] The openings are known as the internal os and external orifice of the uterus (or external os) respectively.^[3] The mucosa lining the cervical canal is known as the endocervix^[4] and the mucosa covering the ectocervix is known as the exocervix.^[5] The cervix has an inner mucosal layer, a thick layer of smooth muscle, and posteriorly the supravaginal portion has a serosal covering consisting of connective tissue and overlying peritoneum.^[3]

A normal cervix of an adult viewed using a bivalved vaginal speculum. The functional squamocolumnar junction surrounds the external os and is visible as the irregular demarcation between the lighter and darker shades of pink mucosa

In front of the upper part of the cervix lies the bladder, separated from it by cellular connective tissue known as parametrium, which also extends over the sides of the cervix.^[3] To the rear, the supravaginal cervix is covered by peritoneum, which runs onto the back of the vaginal wall and then turns upwards and onto the rectum forming the recto-uterine pouch.^[3] The cervix is more tightly connected to surrounding structures than the rest of the uterus.^[6]

The cervical canal varies greatly in length and width between women and over the course of a woman's life,^[2] and can measure 8 mm (0.3 in) at its widest diameter in premenopausal adults.^[7] It is wider in the middle and narrower at each end. The anterior and posterior walls of the canal each have a vertical fold, from which ridges run diagonally upwards and laterally. These are known as palmate folds due to their resemblance to a palm leaf. The anterior and posterior ridges are arranged in such a way that they interlock with each other and close the canal. They are often effaced after pregnancy.^[6]

The ectocervix has a convex, elliptical surface and is divided into anterior and posterior lips. The size and shape of the external opening and the ectocervix can vary according to age, hormonal state, and whether natural or normal childbirth has taken place. In women who have not had a vaginal delivery, the external os is a small circular opening, and in women who have had a vaginal delivery, the external os is slit-like.^[7] On average, the ectocervix is 3 cm (1.2 in) long and 2.5 cm (1 in) wide.^[2]

Blood is supplied to the cervix by the descending branch of the uterine artery^[8] and drains into the uterine vein.^[9] The pelvic splanchnic nerves, emerging as S2–S3, transmit the sensation of pain from the cervix to the brain.^[4] These nerves travel along the uterosacral ligaments, which pass from the uterus to the anterior sacrum.^[8]

Three channels facilitate lymphatic drainage from the cervix.^[10] The anterior and lateral cervix drains to nodes along the uterine arteries, travelling along the cardinal ligaments at the base of the broad ligament to the external iliac lymph nodes and ultimately the paraaortic lymph nodes. The posterior and lateral cervix drains along the uterine arteries to the internal iliac lymph nodes and ultimately the paraaortic lymph nodes, and the posterior section of the cervix drains to the obturator and presacral lymph nodes.^[2]^[9]^[10] However, there are variations as lymphatic drainage from the cervix travels to different sets of pelvic nodes in some people. This has implications in scanning nodes for involvement in cervical cancer.^[10]

After menstruation and directly under the influence of estrogen, the cervix undergoes a series of changes in position and texture. During most of the menstrual cycle, the cervix remains firm, and is positioned low and closed. However, as ovulation approaches, the cervix becomes softer and rises to open in response to the higher levels of estrogen present.^[11] These changes are also accompanied by changes in cervical mucus,^[12] described below.

Development

As a component of the female reproductive system, the cervix is derived from the two paramesonephric ducts (also called Müllerian ducts), which develop around the sixth week of embryogenesis. During development, the outer parts of the two ducts fuse, forming a single urogenital canal that will become the vagina, cervix and uterus.^[13] The cervix grows in size at a smaller rate than the body of the uterus, so the relative size of the cervix over time decreases, decreasing from being much larger than the body of the uterus in fetal life, twice as large during childhood, and decreasing to its adult size, smaller than the uterus, after puberty.^[9] Previously it was thought that during fetal development, the original squamous epithelium of the cervix is derived from the urogenital sinus and the original columnar epithelium is derived from the paramesonephric duct. The point at which these two original epithelia meet is called the original squamocolumnar junction.^[14]^:15–16 New studies show, however, that all the cervical as well as large part of the vaginal epithelium are derived from Müllerian duct tissue and that phenotypic differences might be due to other causes.^[15]

Histology

The squamocolumnar junction of the cervix: The ectocervix, with its stratified squamous epithelium, is visible on the left. Simple columnar epithelium, typical of the endocervix, is visible on the right. A layer of connective tissue is visible under both types of epithelium.

The endocervical mucosa is about 3 mm thick, lined with a single layer of columnar mucous cells, and contains numerous tubular mucous glands which empty viscous alkaline mucus into the lumen.^[3] In contrast, the extocervix is covered with nonkeratinized stratified squamous epithelium,^[3] which resembles the squamous epithelium lining the vaginal.^[16]^:41 The junction between these two types of epithelia is called the squamocolumnar junction.^[16]^:408–11 Underlying both types of epithelium is a tough layer of collagen.^[17] The mucosa of the endocervix is not shed during menstruation.^[3] The cervix has more fibrous tissue, including collagen and elastin, than the rest of the uterus.^[3]

In prepubertal girls, the functional squamocolumnar junction is present just within the endocervical canal.^[16]^:411 Upon entering puberty, due to hormonal influence, and during pregnancy, the columnar epithelium extends outwards over the ectocervix as the cervix everts.^[14]^:106 Hence, this also causes the squamocolumnar junction to move outwards onto the vaginal portion of the cervix, where it is exposed to the acidic vaginal environment.^[14]^:106^[16]^:411 The exposed columnar epithelium can undergo physiological metaplasia and change to tougher metaplastic squamous epithelium in days or weeks,^[16]^:25 which when mature is very similar to the original squamous epithelium.^[16]^:411 The new squamocolumnar junction is therefore internal to the original squamocolumnar junction, and the zone of unstable epithelium between the two junctions is called the transformation zone of the cervix.^[16]^:411 After menopause, the uterine structures involute and the functional squamocolumnar junction moves into the endocervical canal.^[16]^:41

Nabothian cysts (or Nabothian follicles) form in the transformation zone where the lining of metaplastic epithelium has replaced mucous epithelium and caused a strangulation of the outlet of some of the mucous glands.^[16]^:410–411 A build up of mucus in the glands forms Nabothian cysts, usually less than about 5 mm in diameter,^[3] which are considered physiological rather than pathological.^[16]^:411 Both gland openings and Nabothian cysts are helpful to identify the transformation zone.^[14]^:106

Function

Fertility

The cervical canal is a pathway through which sperm enter the uterus after sexual intercourse,^[18] and some forms of artificial insemination.^[19] Some sperm remains in cervical crypts, infoldings of the endocervix, which act as a reservoir, releasing sperm over several hours and maximising the chances of fertilisation.^[20] A theory states the cervical and uterine contractions during orgasm draw semen into the uterus.^[18] Although the "upsuck theory" has been generally accepted for some years, it has been disputed due to lack of evidence, small sample size, and methodological errors.^[21]^[22]

Some methods of fertility awareness, such as the Creighton model and the Billings method involve estimating a woman's periods of fertility and infertility by observing physiological changes in her body. Among these changes are several involving the quality of her cervical mucus: the sensation it causes at the vulva, its elasticity (Spinnbarkeit), its transparency, and the presence of ferning.^[11]

Cervical mucus

Several hundred glands in the endocervix produce 20–60 ml of cervical mucus a day, increasing to 600 ml around the time of ovulation. It is viscous as it contains large proteins known as mucins. The viscosity and water content varies during the menstrual cycle; mucus is composed of around 93% water, reaching 98% at midcycle. These changes allow it to function either as a barrier or a transport medium to spermatozoa. It contains electrolytes such as calcium, sodium, and potassium; organic components such as glucose, amino acids, and soluble proteins; trace elements including zinc, copper, iron, manganese, and selenium; free fatty acids; enzymes such as amylase; and prostaglandins.^[12] Its consistency is determined by the influence of the hormones estrogen and progesterone. At midcycle around the time of ovulation—a period of high estrogen levels— the mucus is thin and serous to allow sperm to enter the uterus, and is more alkaline and hence more hospitable to sperm.^[20] It is also higher in electrolytes, which results in the "ferning" pattern that can be observed in drying mucus under low magnification; as the mucus dries, the salts crystallize, resembling the leaves of a fern.^[11] The mucus has stretchy character described as Spinnbarkeit most prominent around the time of ovulation.^[23]

At other times in the cycle, the mucus is thick and more acidic due to the effects of progesterone.^[20] This "infertile" mucus acts as a barrier to sperm from entering the uterus.^[24] Women taking an oral contraceptive pill also have thick mucus from the effects of progesterone.^[20] Thick mucus also prevents pathogens from interfering with a nascent pregnancy.^[25]

A cervical mucus plug, called the operculum, forms inside the cervical canal during pregnancy. This provides a protective seal for the uterus against the entry of pathogens and against leakage of uterine fluids. The mucus plug is also known to have antibacterial properties. This plug is released as the cervix dilates, either during the first stage of childbirth or shortly before.^[26] It is visible as a blood-tinged mucous discharge.^[27]

Childbirth

The cervix plays a major role in childbirth. As the fetus descends within the uterus in preparation for birth, the presenting part, usually the head, rests on and is supported by the cervix.^[28] As labour progresses, the cervix becomes softer and shorter, begins to dilate, and rotates to face anteriorly.^[29] The support the cervix provides to the fetal head starts to give way when the uterus begins its contractions. During childbirth, the cervix must dilate to a diameter of more than 10 cm (4 in) to accommodate the head of the fetus as it descends from the uterus to the vagina. In becoming wider, the cervix also becomes shorter, a phenomenon known as effacement.^[28]

Along with other factors, midwives and doctors use the extent of cervical dilation to assist decision making during childbirth.^[30]^[31] Generally, the active first stage of labour, when the uterine contractions become strong and regular,^[30] begins when the cervical dilation is more than 3–5 cm (1.2–2.0 in).^[32]^[33] The second phase of labor begins when the cervix has dilated to 10 cm (4 in), which is regarded as its fullest dilation,^[28] and is when active pushing and contractions push the baby along the birth canal leading to the birth of the baby.^[31] The number of past vaginal deliveries is a strong factor in influencing how rapidly the cervix is able to dilate in labour.^[28] The time taken for the cervix to dilate and efface is one factor used in reporting systems such as the Bishop score, used to recommend whether interventions such as a forceps delivery, induction, or Caesarean section should be used in childbirth.^[28]

Cervical incompetence is a condition in which shortening of the cervix due to dilation and thinning occurs, before term pregnancy. Short cervical length is the strongest predictor of preterm birth.^[29]

Contraception

Several methods of contraception involve the cervix. Cervical diaphragms are reusable, firm-rimmed plastic devices inserted by a woman prior to intercourse that cover the cervix. Pressure against the walls of the vagina maintain the position of the diaphragm, and it acts as a physical barrier to prevent the entry of sperm into the uterus, preventing fertilisation. Cervical caps are a similar method, although they are smaller and adhere to the cervix by suction. Diaphragms and caps are often used in conjunction with spermicides.^[34] In one year, 12% of women using the diaphragm will undergo an unintended pregnancy, and with optimal use this falls to 6%.^[35] Efficacy rates are lower for the cap, with 18% of women undergoing an unintended pregnancy, and 10–13% with optimal use.^[36] Most types of progestogen-only pills are effective as a contraceptive because they thicken cervical mucus making it difficult for sperm to pass along the endocervical canal.^[37] In addition, they may also sometimes prevent ovulation.^[37] In contrast, contraceptive pills that contain both oestrogen and progesterone, the combined oral contraceptive pills, work mainly by preventing ovulation.^[38] They also thicken cervical mucus and thin the lining of the uterus enhancing their effectiveness.^[38]

Clinical significance

Cancer

In 2008, cervical cancer was the third-most common cancer in women worldwide, with rates varying geographically from less than one to more than 50 cases per 100,000 women.^[39] It is a leading cause of cancer-related death in poor countries, where delayed diagnosis leading to poor outcomes is common.^[40] The introduction of routine screening has resulted in fewer cases of (and deaths from) cervical cancer, however this has mainly taken place in developed countries. Most developing countries have limited or no screening, and 85% of the global burden occurring there.^[41]

Cervical cancer nearly always involves human papillomavirus (HPV) infection.^[42]^[43] HPV is a virus with numerous strains, several of which predispose to precancerous changes in the cervical epithelium, particularly in the transformation zone, which is the most common area for cervical cancer to start.^[44] HPV vaccines, such as Gardasil and Cervarix, reduce the incidence of cervical cancer, by inoculating against the viral strains involved in cancer development.^[45]

Potentially precancerous changes in the cervix can be detected by cervical screening, using methods including a Pap smear (also called a cervical smear), in which epithelial cells are scraped from the surface of the cervix and examined under a microscope.^[45] The colposcope, an instrument used to see a magnified view of the cervix, was invented in 1925. The Pap smear was developed by Georgios Papanikolaou in 1928.^[46] A LEEP procedure using a heated loop of platinum to excise a patch of cervical tissue was developed by Aurel Babes in 1927.^[47] In some parts of the developed world including the UK, the Pap test has been superseded with liquid-based cytology.^[48]

A cheap, cost-effective and practical alternative in poorer countries is visual inspection with acetic acid (VIA).^[40] Instituting and sustaining cytology-based programs in these regions can be difficult, due to the need for trained personnel, equipment and facilities and difficulties in follow-up. With VIA, results and treatment can be available on the same day. As a screening test, VIA is comparable to cervical cytology in accurately identifying precancerous lesions.^[49]

A result of dysplasia is usually further investigated, such as by taking a cone biopsy, which may also remove the cancerous lesion.^[45] Cervical intraepithelial neoplasia is a possible result of the biopsy, and represents dysplastic changes that may eventually progress to invasive cancer.^[50] Most cases of cervical cancer are detected in this way, without having caused any symptoms. When symptoms occur, they may include vaginal bleeding, discharge, or discomfort.^[51]

Inflammation

Inflammation of the cervix is referred to as cervicitis. This inflammation may be of the endocervix or ectocervix.^[52] When associated with the endocervix, it is associated with a mucous vaginal discharge and the sexually transmitted infections such as chlamydia and gonorrhoea.^[53] Other causes include overgrowth of the commensal flora of the vagina.^[43] When associated with the ectocervix, inflammation may be caused by the herpes simplex virus. Inflammation is often investigated through directly visualising the cervix using a speculum, which may appear whiteish due to exudate, and by taking a Pap smear and examining for causal bacteria. Special tests may be used to identify particular bacteria. If the inflammation is due to a bacterium, then antibiotics may be given as treatment.^[53]

Anatomical abnormalities

Cervical stenosis refers to an abnormally narrow cervical canal, typically associated with trauma caused by removal of tissue for investigation or treatment of cancer, or cervical cancer itself.^[43]^[54] Diethylstilbestrol, used from 1938 to 1971 to prevent preterm labour and miscarriage, is also strongly associated with the development of cervical stenosis and other abnormalities in the daughters of the exposed women. Other abnormalities include vaginal adenosis, in which the squamous epithelium of the ectocervix becomes columnar, cancers such as clear cell adenocarcinomas, cervical ridges and hoods, and development of a "cockscomb" cervical appearance.^[55]

Cervical agenesis is a rare congenital condition in which the cervix completely fails to develop, often associated with the concurrent failure of the vagina to develop.^[56] Other congenital cervical abnormalities exist, often associated with abnormalities of the vagina and uterus. The cervix may be duplicated in situations such as bicornuate uterus and uterine didelphys.^[57]

Other

Cervical polyps, which are benign overgrowths of endocervical tissue, if present, may cause bleeding, or a benign overgrowth may be present in the endocervical canal.^[43] Cervical ectropion refers to the horizontal overgrowth of the endocervical columnar lining in a one-cell-thick layer over the ectocervix.^[53]

History

The name of the cervix comes from Latin: cervix (neck) from the Proto-Indo-European root ker-, referring to a "structure that projects". Thus, the word cervix is linguistically related to the English word "horn", the Persian word for "head" (sar), the Greek word for "head" (Greek: koryphe), and the Welsh word for "deer" (Welsh: carw).^[58]^[59]

The cervix was documented in anatomical literature in at least the time of Hippocrates, although there was some variation in early writers, who used the term to refer to both the cervix and the internal uterine orifice.^[60] The first attested use of the word to refer to the cervix of the uterus was in 1702.^[58]

Cervical cancer has been described for over 2,000 years, with descriptions provided by both Hippocrates and Aretaeus,^[46] although the causal role played by HPV for cervical cancer was only elucidated in the late 20th century by Harald zur Hausen, who published a hypothesis in 1976, and whose hypothesis was confirmed in 1983 and 1984.^[61] Based on work done by Jian Zhou and Ian Fraser, a vaccine for four strains of HPV was released in 2006.^[62]

Other mammals

Female marsupials have paired uteri and cervices. Most eutherian (placental) mammal species have a single cervix and single, bipartite or bicornuate uterus. Lagomorphs, rodents, aardvarks and hyraxes have a duplex uterus and two cervices.^[63] Lagomorphs and rodents share many morphological characteristics and are grouped together in the clade Glires. Anteaters of the family myrmecophagidae are unusual in that they lack a defined cervix; they are thought to have lost the characteristic rather than other mammals developing a cervix on more than one lineage.^[64]

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^ NSW, Family Planning (2009). Contraception : healthy choices : a contraceptive clinic in a book (2nd ed.). Sydney, New South Wales: UNSW Press. pp. 27–37. ISBN 978-1-74223-136-5.
^ Trussell, James (2011). "Contraceptive failure in the United States". Contraception 83 (5): 397–404. doi:10.1016/j.contraception.2011.01.021. PMC 3638209. PMID 21477680.
^ Trussell, J; Strickler, J; Vaughan, B (May–Jun 1993). "Contraceptive efficacy of the diaphragm, the sponge and the cervical cap.". Family Planning Perspectives 25 (3): 100–05, 135. doi:10.2307/2136156. PMID 8354373.
^ ^a ^b "Your Guide to the progesterone-one pill" (PDF). Family Planning Association (UK). pp. 3–4. ISBN 978-1-908249-53-1. Retrieved 9 November 2014.
^ ^a ^b "Your Guide to the combined pill" (PDF). Family Planning Association (UK). January 2014. p. 4. ISBN 978-1-908249-50-0. Retrieved 9 November 2014.
^ Arbyn, M.; Castellsague, X.; de Sanjose, S.; Bruni, L.; Saraiya, M.; Bray, F.; Ferlay, J. (6 April 2011). "Worldwide burden of cervical cancer in 2008". Annals of Oncology 22 (12): 2675–86. doi:10.1093/annonc/mdr015.
^ ^a ^b World Health Organization (February 2014). "Fact sheet No. 297: Cancer". Retrieved 23 July 2014.
^ Vaccarella, Salvatore; Lortet-Tieulent, Joannie; Plummer, Martyn; Franceschi, Silvia; Bray, Freddie (2013). "Worldwide Trends in Cervical Cancer Incidence: Impact of Screening against Changes in Disease Risk Factors". European Journal of Cancer 49 (15): 3262–73. doi:10.1016/j.ejca.2013.04.024.
^ Wahl, Carter E. (2007). Hardcore pathology. Philadelphia, PA: Lippincott Williams & Wilkins. p. 72. ISBN 9781405104982.
^ ^a ^b ^c ^d Mitchell, Richard Sheppard; Kumar, Vinay; Robbins, Stanley L.; Abbas, Abul K.; Fausto, Nelson (2007). Robbins basic pathology (8th ed.). Saunders/Elsevier. pp. 716–21. ISBN 1-4160-2973-7.
^ Lowe, Alan Stevens, James S. (2005). Human histology (3rd ed.). Philadelphia, PA; Toronto, ON: Elsevier Mosby. pp. 350–51. ISBN 0-323-03663-5.
^ ^a ^b ^c Fauci, Anthony S. et al., eds. (2008). Harrison's Principles of Internal Medicine. Editors of previous edition: T. R. Harrison et al. (17th ed.). New York [etc.]: McGraw-Hill Medical. pp. 608–09. ISBN 978-0-07-147692-8.
^ ^a ^b Gasparini, R; Panatto, D (May 29, 2009). "Cervical cancer: from Hippocrates through Rigoni-Stern to zur Hausen.". Vaccine. 27 Suppl 1: A4–5. doi:10.1016/j.vaccine.2008.11.069. PMID 19480961.
^ Diamantis, Aristidis; Magiorkinis, Emmanouil; Androutsos, George (November 2010). "Different Strokes: Pap-test and Babes Method are not One and the Same". Diagnostic Cytopathology 38 (11): 857–59. doi:10.1002/dc.21347.
^ Gray, Winifred; Kocjan, Gabrijela, eds. (2010). Diagnostic Cytopathology. Churchill Livingstone. p. 613.
^ Sherris, Jacqueline; Wittet, Scott; Kleine, Amy; Sellors, John; Luciani, Silvana; Sankaranarayanan, Rengaswamy; Barone, Mark A. (September 2009). "Evidence-based, alternative cervical cancer screening approaches in low-resource settings". Int Perspect Sex Reprod Health 35 (3): 147–54. doi:10.1363/ifpp.35.147.09. PMID 19805020.
^ Cannistra, Stephen A.; Niloff, Jonathan M. (1996). "Cancer of the Uterine Cervix". New England Journal of Medicine 334 (16): 1030–37. doi:10.1056/NEJM199604183341606.
^ Colledge, Nicki R.; Walker, Brian R.; Ralston, Stuart H., eds. (2010). Davidson's Principles and Practice of Medicine. Illustrated by Robert Britton (21st ed.). Edinburgh: Churchill Livingstone/Elsevier. p. 276. ISBN 978-0-7020-3084-0.
^ Stamm, Walter (2013). The Practitioner's Handbook for the Management of Sexually Transmitted Diseases. Seattle STD/HIV Prevention Training Center. pp. Chapter 7: Cervicitis.
^ ^a ^b ^c Fauci, Anthony S. et al., eds. (2008). Harrison's Principles of Internal Medicine. Editors of previous edition: T. R. Harrison et al. (17th ed.). New York [etc.]: McGraw-Hill Medical. pp. 828–29. ISBN 978-0-07-147692-8.
^ Valle, Rafael F.; Sankpal, Rajendra; Marlow, John L.; Cohen, Leeber. "Cervical Stenosis: A Challenging Clinical Entity". Journal of Gynecologic Surgery 18 (4): 129–43. doi:10.1089/104240602762555939.
^ Casey, Petra M.; Long, Margaret E.; Marnach, Mary L. "Abnormal Cervical Appearance: What to Do, When to Worry?". Mayo Clinic Proceedings 86 (2): 147–51. doi:10.4065/mcp.2010.0512. PMC 3031439. PMID 21270291.
^ Fujimoto, Victor Y.; Miller, J.Heath; Klein, Nancy A.; Soules, Michael R. "Congenital cervical atresia: Report of seven cases and review of the literature". American Journal of Obstetrics and Gynecology 177 (6): 1419–25. doi:10.1016/S0002-9378(97)70085-1.
^ Patton, PE; Novy, MJ; Lee, DM; Hickok, LR (Jun 2004). "The diagnosis and reproductive outcome after surgical treatment of the complete septate uterus, duplicated cervix and vaginal septum.". American journal of obstetrics and gynecology 190 (6): 1669–75; discussion 1675–78. doi:10.1016/j.ajog.2004.02.046. PMID 15284765.
^ ^a ^b Harper, Douglas. "Cervix". Etymology Online. Retrieved 19 March 2014.
^ Harper, Douglas. "Horn". Etymology Online. Retrieved 19 March 2014.
^ Galen/Johnston (2011). Galen: On Diseases and Symptoms. Cambridge, United Kingdom: Cambridge University Press. p. 247. ISBN 978-1-139-46084-2.
^ McIntyre, Peter (July–August 2006). "Finding the viral link: the story of Harald zur Hausen" (PDF). Cancer World: 32–37.
^ McLemore, Monica R. (1 October 2006). "Gardasil®: Introducing the New Human Papillomavirus Vaccine". Clinical Journal of Oncology Nursing 10 (5): 559–60. doi:10.1188/06.CJON.559-560.
^ Feldhamer, George A.; Drickamer, Lee C.; Vessey, Stephen H.; Merritt, Joseph F.; Krajewski, Carey (2007). Mammalogy: Adaptation, Diversity, Ecology. Baltimore, MD: JHU Press. p. 198. ISBN 9780801886959.
^ Novacek, Michael J. ; Wyss, André R. (1986). "Higher-level Relationships of the Recent Eutherian Orders: Morphological Evidence". Cladistics 2 (4): 257–87. doi:10.1111/j.1096-0031.1986.tb00463.x.

Cited texts

"Intrapartum care: Care of healthy women and their babies during childbirth". NICE. September 2007.

External links

Media related to Cervix uteri at Wikimedia Commons

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

1. コルポスコピー colposcopy
2. 子宮頸部上皮内腫瘍：治療およびフォローアップ cervical intraepithelial neoplasia treatment and follow up
3. 子宮内膜掻爬術 dilation and curettage
4. 浸潤子宮頸癌：疫学、危険因子、臨床症状、および診断 invasive cervical cancer epidemiology risk factors clinical manifestations and diagnosis
5. 子宮頸部上皮内腫瘍：低悪性度および高悪性度病変のマネージメント cervical intraepithelial neoplasia management of low grade and high grade lesions

English Journal

Tomoelastography by multifrequency wave number recovery from time-harmonic propagating shear waves.

Tzschätzsch H1, Guo J1, Dittmann F1, Hirsch S1, Barnhill E1, Jöhrens K2, Braun J3, Sack I4.
Medical image analysis.Med Image Anal.2016 May;30:1-10. doi: 10.1016/j.media.2016.01.001. Epub 2016 Jan 13.
Palpation is one of the most sensitive, effective diagnostic practices, motivating the quantitative and spatially resolved determination of soft tissue elasticity parameters by medical ultrasound or MRI. However, this so-called elastography often suffers from limited anatomical resolution due to noi
PMID 26845371

Disruption of estrogen homeostasis as a mechanism for uterine toxicity in Wistar Han rats treated with tetrabromobisphenol A.

Sanders JM1, Coulter SJ2, Knudsen GA2, Dunnick JK3, Kissling GE3, Birnbaum LS2.
Toxicology and applied pharmacology.Toxicol Appl Pharmacol.2016 May 1;298:31-9. doi: 10.1016/j.taap.2016.03.007. Epub 2016 Mar 15.
Chronic oral treatment of tetrabromobisphenol A (TBBPA) to female Wistar Han rats resulted in increased incidence of cell proliferation at 250mg/kg and tumor formation in the uterus at higher doses. The present study was designed to test the hypothesis that disruption of estrogen homeostasis was a m
PMID 26988606

"Feeling the force" in reproduction: Mechanotransduction in reproductive processes.

Evans JP1, Leppert PC2,3.
Connective tissue research.Connect Tissue Res.2016 Apr 12:1-9. [Epub ahead of print]
Reproductive biologists are well-versed in many types of biochemical signaling, and indeed, there are almost innumerable examples in reproduction, including steroid and peptide hormone signaling, receptor-ligand and secondary messenger-mediated signaling, signaling regulated by membrane channels, an
PMID 27070825

Japanese Journal

完全中隔子宮に対し腹腔鏡補助下子宮鏡下中隔切除術を施行後に妊娠成立した1例

産業医科大学雑誌 37(1), 17-22, 2015-03-01
NAID 110009923660

分娩中に発症して救命しえたが重度の後遺障害を生じた羊水塞栓症の1例

産婦人科の進歩 67(4), 381-387, 2015
NAID 130005110849

FDG-PET/MRIを用いたがん検診を機に発見された低悪性度子宮内膜間質肉腫

産婦人科の進歩 67(2), 60-66, 2015
NAID 130005085378

Related Pictures

★リンクテーブル★

リンク元	「子宮頚部」「cervical」「子宮頚」「uterocervical」「cervix uteri」
関連記事	「cervix」

「子宮頚部」

Cervix
	The human female reproductive system. The cervix is the lower narrower portion of the uterus.
Details
Latin	Cervix uteri
Precursor	Müllerian duct
Artery	Vaginal artery and uterine artery
Identifiers
Gray's	p.1259
MeSH	A05.360.319.679.256
Dorlands; /Elsevier	cervix uteri
TA	A09.1.03.010
FMA	17740
	Anatomical terminology

　　[★]

英: uterine cervix, cervix of uterus, cervical canal of uterus, uterine neck
ラ: canalis cervicis uteri, cervix uteri
同: 子宮頸部
関: 子宮頚管子宮頸管、頸管 cervical canal。子宮口。子宮; uterocervical、cervical

[show details]

子宮頸部 : 約 375,000 件
子宮頚部 : 約 151,000 件

組織

上皮は単層円柱上皮で覆われており粘液を分泌 (HIS.403)
膣部では非角化重層扁平上皮となっている。

「cervical」

　　[★]

adj.

頚部の、頸部の、頚椎の、頸椎の、頚髄の、頸髄の、頚の、頸の、子宮頚部の、子宮頸部の

一般には首を表すが病名では子宮頚部を表すことが多いので注意

関: cervical cord、cervical region、cervical spinal cord、cervical spine、cervical vertebra、cervical vertebrae、cervix、cervix of uterus、cervix uteri、neck、uterine cervix、uterocervical、vertebrae cervicales

「子宮頚」

　　[★]

英: cervix of uterus (KL,Z)
関: 子宮

子宮の下1/3(cf. 子宮体)
子宮体と子宮頚の間のくびれが子宮峡部であって、子宮頚の管腔が子宮頚管 (KL.456)

「uterocervical」

　　[★]

子宮頚部の、子宮頸部の

関: cervical、cervix、cervix of uterus、cervix uteri、uterine cervix

「cervix uteri」

　　[★]

子宮頚部、子宮頸部

関: cervical、cervix、cervix of uterus、uterine cervix、uterocervical

「cervix」

　　[★]

n.

首、頚、頚部、(各種臓器の)頚部

[NCI2011-1] "Human Papillomavirus (HPV) Vaccines". National Cancer Institute. Bethesda, MD. 29 December 2011. Retrieved 18 June 2014.

[KURMAN1994-2] Kurman, edited by Robert J. (1994). Blaustein's Pathology of the Female Genital Tract (4th ed.). New York, NY: Springer New York. pp. 185–201. ISBN 978-1-4757-3889-6.

[Gray38-3] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l Gray, Henry (1995). Williams, Peter L, ed. Gray's Anatomy (38th ed.). Churchill Livingstone. pp. 1870–73. ISBN 0-443-04560-7.

[GRAYS2005-4] Drake, Richard L.; Vogl, Wayne; Tibbitts, Adam W.M. Mitchell; illustrations by Richard; Richardson, Paul (2005). Gray's anatomy for students. Philadelphia, PA: Elsevier/Churchill Livingstone. pp. 415, 423. ISBN 978-0-8089-2306-0.

[5] Ovalle, William K.; Nahirney, Patrick C. ; illustrations by Frank H. Netter, contributing illustrators, Joe Chovan ... [et al.] (2013). "Female Reproductive System". Netter's Essential Histology (2nd ed.). Philadelphia, PA: Elsevier/Saunders. p. 416. ISBN 978-1-4557-0631-0.

[Gardner69-6] Gardner, Ernest; Gray, Donald J.; O'Rahilly, Ronan (1969) [1960]. Anatomy: A Regional Study of Human Structure (3rd ed.). Philadelphia, PA: W.B.Saunders. pp. 495–98.

[Blaustein2002-7] Kurman, R. J, ed. (2002). Blaustein's Pathology of the Female Genital Tract (5th ed.). Spinger. p. 207.

[DAFTARY2011-8] Daftary (2011). Manual of Obstretics, 3/e. Elsevier. pp. 1–16. ISBN 81-312-2556-9.

[ELLIS2011-9] Ellis, Harold (2011). "Anatomy of the uterus". Anaesthesia & Intensive Care Medicine 12 (3): 99–101. doi:10.1016/j.mpaic.2010.11.005.

[SINGER2005-10] Singer, Albert et al., eds. (2005). The Cervix (2nd ed.). Oxford, United Kingdom: Blackwell Publishing. pp. Chapter 3. The Vascular, Neural and Lymphatic Anatomy of the Cervix. ISBN 9781405131377.

[Weschler-11] Weschler, Toni (2006). Taking charge of your fertility : the definitive guide to natural birth control, pregnancy achievement, and reproductive health (Revised ed.). New York, NY: Collins. pp. 59, 64. ISBN 978-0-06-088190-0. CS1 maint: Extra text (link)

[CERVIX2006-12] Sharif, Khaldoun; Olufowobi, Olufemi (2006). "The structure chemistry and physics of human cervical mucus". In Jordan, Joseph; Singer, Albert; Jones, Howard; Shafi, Mahmood. The Cervix (2nd ed.). Malden, MA: Blackwell Publishing. pp. 157–68. ISBN 978-1-4051-3137-7.

[13] Schoenwolf, Gary C.; Bleyl, Steven B.; Brauer, Philip R.; Francis-West, Philippa H. (2009). ""Development of the Urogenital system"". Larsen's human embryology (4th ed.). Philadelphia, PA: Churchill Livingstone/Elsevier. ISBN 978-0-443-06811-9.

[Cervix2006-14] McLean, John M (November 2006). "Morphogenesis and Differentiation of the cervicovaginal epithelium". In Jordan, Joseph; Singer, Albert; Jones, Howard; Shafi, Mahmood. The Cervix (2nd ed.). Wiley-Blackwell. ISBN 978-1-4051-3137-7.

[Kurita2010-15] Kurita, Takeshi. "Developmental origin of vaginal epithelium". Differentiation 80: 99–105. doi:10.1016/j.diff.2011.04.008.

[0.26G-7th-16] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Beckmann, Charles R B A; Herbert, William; Laube, Douglas; Ling, Frank; Smith, Roger (March 2013). Obstetrics and Gynecology (7th ed.). pp. 408–11. ISBN 9781451144314.

[WHEATERS2006-17] Deakin, Barbara Young ... [et al.] ; drawings by Philip J. (2006). Wheater's functional histology : a text and colour atlas (5th ed.). Edinburgh, United Kingdom: Churchill Livingstone/Elsevier. p. 376. ISBN 978-0-443-06850-8.

[GUYTONHALL2005-18] Guyton, Arthur C.; Hall, John Edward (2005). Textbook of Medical Physiology (11th ed.). Philadelphia, PA: W.B. Saunders. p. 1027. ISBN 978-0-7216-0240-0.

[19] European Sperm Bank USA "Demystifying IUI, ICI, IVI and IVF". European Sperm Bank USA / Seattle Sperm Bank. Retrieved 9 November 2014.

[BRANNIGAN2008-20] Brannigan, Robert E.; Lipshultz, Larry I. (2008). "Sperm Transport and Capacitation". The Global Library of Women's Medicine. doi:10.3843/GLOWM.10316.

[21] Levin, Roy J. (November 2011). "The human female orgasm: a critical evaluation of its proposed reproductive functions". Sexual and Relationship Therapy 26 (4): 301–14. doi:10.1080/14681994.2011.649692.

[22] Borrow, Amanda P.; Cameron, Nicole M. "The role of Oxytocin in Mating and Pregnancy". Hormones and Behavior 61 (3): 266–76. doi:10.1016/j.yhbeh.2011.11.001.

[23] Anderson,=Matthew; Karasz, Alison (2004). "Are Vaginal Symptoms Ever Normal? A Review of the Literature". Medscape General Medicine 6 (4): 49.

[24] Westinore, Ann; Evelyn, Billings (1998). The Billings Method: Controlling Fertility Without Drugs or Devices. Toronto, ON: Life Cycle Books. p. 37. ISBN 0-919225-17-9.

[25] Wagner, G.; Levin, R. J. "Electrolytes in vaginal fluid during the menstrual cycle of coitally active and inactive women" (PDF).

[26] Becher, Naja; Waldorf, Kristina Adams; Hein, Merete; Uldbjerg, Niels (May 2009). "The Cervical Mucus Plug: Structured Review of the Literature". Acta Obstetricia et Gynecologica Scandinavica 88 (5): 502–13. doi:10.1080/00016340902852898.

[27] Leonard Lowdermilk, Deitra; Perry, Shannon E. (2006). Maternity Nursing (7th ed.). Edinburgh, United Kingdom: Elsevier Mosby. p. 394. ISBN 978-0-323-03366-4.

[WILLIAMS2005-28] Cunningham,F.; Leveno,Kenneth; Bloom,Steven; Hauth,John; Gilstrap,Larry; Wenstrom,Katharine (2005). Williams obstetrics. (22nd ed.). New York, NY ; Toronto, ON: McGraw-Hill Professional. pp. 157–60, 537–39. ISBN 0-07-141315-4.

[GOLDENBERG2008-29] Goldenberg, Robert L; Culhane, Jennifer F; Iams, Jay D; Romero, Roberto (January 2008). "Epidemiology and causes of preterm birth". The Lancet 371 (9606): 75–84. doi:10.1016/S0140-6736(08)60074-4. PMID 18177778.

[NICE-labour-30] <NICE (2007). Section 1.6, Normal labour: first stage

[NICE_2007-31] NICE (2007). Section 1.7, Normal labour: second stage

[32] ACOG (2012). "Obstetric Data Definitions Issues and Rationale for Change" (PDF). Revitalize. Retrieved 4 November 2014.

[33] Su, Min; Hannah, Walter J.; Willan, Andrew; Ross, Susan; Hannah, Mary E. (Oct 2004). "Planned caesarean section decreases the risk of adverse perinatal outcome due to both labour and delivery complications in the Term Breech Trial". BJOG: An International Journal of Obstetrics and Gynaecology 111 (10): 1065–74. doi:10.1111/j.1471-0528.2004.00266.x. PMID 15383108.

[34] NSW, Family Planning (2009). Contraception : healthy choices : a contraceptive clinic in a book (2nd ed.). Sydney, New South Wales: UNSW Press. pp. 27–37. ISBN 978-1-74223-136-5.

[35] Trussell, James (2011). "Contraceptive failure in the United States". Contraception 83 (5): 397–404. doi:10.1016/j.contraception.2011.01.021. PMC 3638209. PMID 21477680.

[36] Trussell, J; Strickler, J; Vaughan, B (May–Jun 1993). "Contraceptive efficacy of the diaphragm, the sponge and the cervical cap.". Family Planning Perspectives 25 (3): 100–05, 135. doi:10.2307/2136156. PMID 8354373.

[FPA-POP-37] "Your Guide to the progesterone-one pill" (PDF). Family Planning Association (UK). pp. 3–4. ISBN 978-1-908249-53-1. Retrieved 9 November 2014.

[FPA-COC-38] "Your Guide to the combined pill" (PDF). Family Planning Association (UK). January 2014. p. 4. ISBN 978-1-908249-50-0. Retrieved 9 November 2014.

[ARBYN2011-39] Arbyn, M.; Castellsague, X.; de Sanjose, S.; Bruni, L.; Saraiya, M.; Bray, F.; Ferlay, J. (6 April 2011). "Worldwide burden of cervical cancer in 2008". Annals of Oncology 22 (12): 2675–86. doi:10.1093/annonc/mdr015.

[who_fact_sheet-40] World Health Organization (February 2014). "Fact sheet No. 297: Cancer". Retrieved 23 July 2014.

[Vaccarella13-41] Vaccarella, Salvatore; Lortet-Tieulent, Joannie; Plummer, Martyn; Franceschi, Silvia; Bray, Freddie (2013). "Worldwide Trends in Cervical Cancer Incidence: Impact of Screening against Changes in Disease Risk Factors". European Journal of Cancer 49 (15): 3262–73. doi:10.1016/j.ejca.2013.04.024.

[WAHL2007-42] Wahl, Carter E. (2007). Hardcore pathology. Philadelphia, PA: Lippincott Williams & Wilkins. p. 72. ISBN 9781405104982.

[ROBBINS2007-43] Mitchell, Richard Sheppard; Kumar, Vinay; Robbins, Stanley L.; Abbas, Abul K.; Fausto, Nelson (2007). Robbins basic pathology (8th ed.). Saunders/Elsevier. pp. 716–21. ISBN 1-4160-2973-7.

[LOWE2005-44] Lowe, Alan Stevens, James S. (2005). Human histology (3rd ed.). Philadelphia, PA; Toronto, ON: Elsevier Mosby. pp. 350–51. ISBN 0-323-03663-5.

[HARRISONS2010B-45] Fauci, Anthony S. et al., eds. (2008). Harrison's Principles of Internal Medicine. Editors of previous edition: T. R. Harrison et al. (17th ed.). New York [etc.]: McGraw-Hill Medical. pp. 608–09. ISBN 978-0-07-147692-8.

[GASPARINI2009-46] Gasparini, R; Panatto, D (May 29, 2009). "Cervical cancer: from Hippocrates through Rigoni-Stern to zur Hausen.". Vaccine. 27 Suppl 1: A4–5. doi:10.1016/j.vaccine.2008.11.069. PMID 19480961.

[47] Diamantis, Aristidis; Magiorkinis, Emmanouil; Androutsos, George (November 2010). "Different Strokes: Pap-test and Babes Method are not One and the Same". Diagnostic Cytopathology 38 (11): 857–59. doi:10.1002/dc.21347.

[48] Gray, Winifred; Kocjan, Gabrijela, eds. (2010). Diagnostic Cytopathology. Churchill Livingstone. p. 613.

[sherris-49] Sherris, Jacqueline; Wittet, Scott; Kleine, Amy; Sellors, John; Luciani, Silvana; Sankaranarayanan, Rengaswamy; Barone, Mark A. (September 2009). "Evidence-based, alternative cervical cancer screening approaches in low-resource settings". Int Perspect Sex Reprod Health 35 (3): 147–54. doi:10.1363/ifpp.35.147.09. PMID 19805020.

[NEJM1996-50] Cannistra, Stephen A.; Niloff, Jonathan M. (1996). "Cancer of the Uterine Cervix". New England Journal of Medicine 334 (16): 1030–37. doi:10.1056/NEJM199604183341606.

[DAVIDSONS2010-51] Colledge, Nicki R.; Walker, Brian R.; Ralston, Stuart H., eds. (2010). Davidson's Principles and Practice of Medicine. Illustrated by Robert Britton (21st ed.). Edinburgh: Churchill Livingstone/Elsevier. p. 276. ISBN 978-0-7020-3084-0.

[STAMM2013-52] Stamm, Walter (2013). The Practitioner's Handbook for the Management of Sexually Transmitted Diseases. Seattle STD/HIV Prevention Training Center. pp. Chapter 7: Cervicitis.

[HARRISONS2010-53] Fauci, Anthony S. et al., eds. (2008). Harrison's Principles of Internal Medicine. Editors of previous edition: T. R. Harrison et al. (17th ed.). New York [etc.]: McGraw-Hill Medical. pp. 828–29. ISBN 978-0-07-147692-8.

[54] Valle, Rafael F.; Sankpal, Rajendra; Marlow, John L.; Cohen, Leeber. "Cervical Stenosis: A Challenging Clinical Entity". Journal of Gynecologic Surgery 18 (4): 129–43. doi:10.1089/104240602762555939.

[55] Casey, Petra M.; Long, Margaret E.; Marnach, Mary L. "Abnormal Cervical Appearance: What to Do, When to Worry?". Mayo Clinic Proceedings 86 (2): 147–51. doi:10.4065/mcp.2010.0512. PMC 3031439. PMID 21270291.

[56] Fujimoto, Victor Y.; Miller, J.Heath; Klein, Nancy A.; Soules, Michael R. "Congenital cervical atresia: Report of seven cases and review of the literature". American Journal of Obstetrics and Gynecology 177 (6): 1419–25. doi:10.1016/S0002-9378(97)70085-1.

[57] Patton, PE; Novy, MJ; Lee, DM; Hickok, LR (Jun 2004). "The diagnosis and reproductive outcome after surgical treatment of the complete septate uterus, duplicated cervix and vaginal septum.". American journal of obstetrics and gynecology 190 (6): 1669–75; discussion 1675–78. doi:10.1016/j.ajog.2004.02.046. PMID 15284765.

[ETYCERVIX2014-58] Harper, Douglas. "Cervix". Etymology Online. Retrieved 19 March 2014.

[59] Harper, Douglas. "Horn". Etymology Online. Retrieved 19 March 2014.

[60] Galen/Johnston (2011). Galen: On Diseases and Symptoms. Cambridge, United Kingdom: Cambridge University Press. p. 247. ISBN 978-1-139-46084-2.

[61] McIntyre, Peter (July–August 2006). "Finding the viral link: the story of Harald zur Hausen" (PDF). Cancer World: 32–37.

[62] McLemore, Monica R. (1 October 2006). "Gardasil®: Introducing the New Human Papillomavirus Vaccine". Clinical Journal of Oncology Nursing 10 (5): 559–60. doi:10.1188/06.CJON.559-560.

[feldhamer-63] Feldhamer, George A.; Drickamer, Lee C.; Vessey, Stephen H.; Merritt, Joseph F.; Krajewski, Carey (2007). Mammalogy: Adaptation, Diversity, Ecology. Baltimore, MD: JHU Press. p. 198. ISBN 9780801886959.

[novacek-64] Novacek, Michael J. ; Wyss, André R. (1986). "Higher-level Relationships of the Recent Eutherian Orders: Morphological Evidence". Cladistics 2 (4): 257–87. doi:10.1111/j.1096-0031.1986.tb00463.x.

匿名

検索

案内

案内

cervix of uterus