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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/04/06 00:20:07」(JST)

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The external orifice of the uterus (or ostium of uterus, or external os) is a small, depressed, somewhat circular aperture on the rounded extremity of the vaginal portion of the cervix. Through this aperture, the cervical cavity communicates with that of the vagina.

The external orifice is bounded by two lips, an anterior and a posterior. The anterior is shorter and thicker, though it projects lower than the posterior because of the slope of the cervix. Normally, both lips are in contact with the posterior vaginal wall.

In the prepartum condition, or prior to pregnancy, the external orifice has a rounded shape when viewed through the vaginal canal (as through a speculum). Following parturition, the orifice takes on an appearance more like a transverse slit or is "H-shaped".

Additional images

Vessels of the uterus and its appendages, rear view.
Median sagittal section of female pelvis.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

Anatomy figure: 43:05-21 at Human Anatomy Online, SUNY Downstate Medical Center - "The uterus, uterine tubes and ovary with associated structures."

This article related to the genitourinary system is a stub. You can help Wikipedia by expanding it.

UpToDate Contents

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English Journal

IMAGING DIAGNOSIS-URINARY BLADDER DUPLICATION IN A CAT.

Cook AB1, Langston CE2, Fischetti AJ3, Donovan TA4.
Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association.Vet Radiol Ultrasound.2015 Jul;56(4):E48-53. doi: 10.1111/vru.12194. Epub 2014 Aug 19.
A female kitten presented for chronic, intermittent, antibiotic-responsive urinary incontinence and chronic kidney disease. Abdominal ultrasound identified bilateral pelvic/ureteral dilation and three closely apposed thin-walled fluid-filled structures in the caudal abdomen, extending toward the pel
PMID 25138710

Three-dimensional architecture of the ovine oviductal mucosa.

Yániz JL1, Carretero T, Recreo P, Arceiz E, Santolaria P.
Anatomia, histologia, embryologia.Anat Histol Embryol.2014 Oct;43(5):331-40. doi: 10.1111/ahe.12078. Epub 2013 Jul 15.
The objective of this work was to establish for the first time a complete three-dimensional model of the ovine oviductal mucosa. The oviducts of 15 cyclic ewes were examined combining the direct examination of the mucosa, by scanning electron microscopy (SEM) and histology, with the SEM observation
PMID 23848134

Role of hysteroscopy and endometrial biopsy in women with unexplained infertility.

Makled AK1, Farghali MM, Shenouda DS.
Archives of gynecology and obstetrics.Arch Gynecol Obstet.2014 Jan;289(1):187-92. doi: 10.1007/s00404-013-2931-8. Epub 2013 Jul 20.
OBJECTIVES: This study was designed to evaluate the role of hysteroscopy and endometrial biopsy in women with unexplained infertility.PATIENTS AND METHODS: Women with unexplained infertility were included in this prospective study, evaluated with transvaginal sonography and diagnostic hysteroscopy.
PMID 23872980

Japanese Journal

Micropapillary pattern を有する子宮頸部腺癌の1例

梶山明日香,石井恵理,中川美紀,原仁,本田智美,池上淳,寺本勝寛,小山敏雄
日本臨床細胞学会雑誌 52(3), 231-236, 2013-05-22
背景 : micropapillary carcinoma は乳腺, 膀胱, 卵巣, 肺, 消化管等の臓器で続々と症例が報告されている癌組織型である. 今回われわれは, micropapillary pattern を有する子宮頸部腺癌の 1 例を経験したので報告する.症例 : 87 歳, 女性. 不正性器出血を主訴に前医を受診し子宮頸部細胞診で adenocarcinoma と診断した. 子宮頸 …
NAID 10031158820

Novel implant for transcervical sterilization(MEDICAL BIOTECHNOLOGY)

Rehan Muhammad,Coleman James,Olabi Abdul Ghani
Journal of bioscience and bioengineering 110(2), 242-249, 2010-08
… The implant is designed to be deployed under hysteroscopic visualization into the ostium of the fallopian tube and relies on instant mechanical occlusion. … The implant includes two sets of wings that penetrate into the ostium and uterine muscle tissue and trap the tissue in between thus plugging the entrance of the fallopian tube. … The implant was validated by a number of successful deployments in bench testing, animal tissue and explanted human uteri. …
NAID 110007700576

子宮内外同時妊娠の１例

益本貴之,尾形理江,森本規之 [他],岡田朋子,三浦徹
産婦人科の進歩 59(4), 265-268, 2007
　今回われわれは子宮内外同時妊娠の1例を経験した．文献的考察を加えて報告する．症例は35歳既婚．0経妊0経産．平成○年2月3日を最終月経の開始日とした無月経を主訴に，当院を平成○年3月22日初診となった．既往歴，家族歴に特記事項なし．排卵誘発等の不妊治療歴はなし．初診時の腟鏡診，内診では異常所見を認めず，経腟超音波検査にて子宮内に胎嚢と思われるエコーフリースペースを認めた．平成○年4月4日，性器出 …
NAID 130001223027

「子宮口」

External orifice of the uterus
	Posterior half of uterus and upper part of vagina. (External orifice labeled at bottom.)
	Uterus and right broad ligament, seen from behind. (External uterine orifice labeled at bottom.)
Details
Latin	ostium uteri, orificium externum uteri
Dorlands; /Elsevier	o_09/12602106
	Anatomical terminology [edit on Wikidata]

　　[★]

英: uterine os
ラ: ostium uteri
関: 子宮、外子宮口、内子宮口、産科学的内子宮口、組織学的内子宮口、解剖学的内子宮口

「ostium」

　　[★]

n.

開口部、口、小口、穴

(pl.)ostia

関: ostial、stoma

「uteri」

　　[★]

ns.

子宮

関: uterine、uterus、womb

External orifice of the uterus
Posterior half of uterus and upper part of vagina. (External orifice labeled at bottom.)
Uterus and right broad ligament, seen from behind. (External uterine orifice labeled at bottom.)
Details
Latin	ostium uteri, orificium externum uteri
Dorlands /Elsevier	o_09/12602106
*Anatomical terminology* [edit on Wikidata]

リンク元	「子宮口」
関連記事	「ostium」「uteri」

匿名

検索

案内

案内

ostium uteri