下生殖靭帯
WordNet
- situated in or directed toward the part of the body from which the tail arises; "caudal fins"; "the caudal end of the body"
- resembling a tail (同)taillike
- constituting or relating to a tail; "caudal appendage"
- of or relating to the external sex organs; "genital herpes"; "venereal disease" (同)venereal
- any connection or unifying bond
- a sheet or band of tough fibrous tissue connecting bones or cartilages or supporting muscles or organs
- any taillike structure
PrepTutorEJDIC
- (動物の)尾部の;尾状の
- 生殖の,生殖器の
- 靱帯(じんたい)(骨と骨を結びつてけ関節の動きを調節する)
- 生殖器;(特に)外部生殖器
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2013/11/12 13:08:38」(JST)
[Wiki en表示]
This article is about the structure in mammals. For the term in parasitology, see Gubernaculum (parasitology).
Gubernaculum |
|
Sagittal section through the pelvis of a newly born female child. (Label for round ligament of uterus visible at upper right.) |
Latin |
Gubernaculum |
Gray's |
subject #252 1211 |
Days |
60 |
Precursor |
Intermediate mesoderm |
Gives rise to |
Gubernaculum testis (males), suspensory ligament of ovary, round ligament of uterus, ovarian ligament (females) |
The paired Gubernacula (from Ancient Greek κυβερνάω = pilot, steer, also called the Caudal Genital Ligament) are embryonic structures which begin as undifferentiated mesenchyme attaching to the caudal end of the gonads (testes in males and ovaries in females).
Contents
- 1 Function during development
- 2 Adult structures
- 3 See also
- 4 References
- 5 External links
Function during development[edit]
As the scrotum and labia majora form in males and females, respectively, the gubernaculum aids in the descent of the gonads (both testes and ovaries).
The testes descend to a greater degree than the ovaries and ultimately pass through the inguinal canal.
Adult structures[edit]
The gubernaculum is present only during the development of the urinary and reproductive organs, being replaced by distinct vestiges in males and females.
Males[edit]
In males:
- The upper part of the gubernaculum degenerates.
- The lower part persists as the gubernaculum testis ("scrotal ligament"). This ligament secures the testis to the most inferior portion of the scrotum, tethering it in place and limiting the degree to which the testis can move within the scrotum.
Females[edit]
In females:
- The gubernaculum has two vestigial remnants in females, the ovarian ligament and the round ligament of the uterus (ligamentum teres uteri) which respectively serve to support the ovaries and uterus in the pelvis.
See also[edit]
References[edit]
External links[edit]
- SUNY Labs 36:06-0101 - "Inguinal Region, Scrotum and Testes: The Scrotal Ligament"
- Gubernaculum at eMedicine Dictionary
Prenatal development/mammalian embryogenesis, Development of the urinary and reproductive organs (GA 11.1204, TE E5.6-7)
|
|
Common urinary and
reproductive system |
- Mesoderm → Intermediate mesoderm
- Mesoderm → Lateral plate mesoderm ("LPM")
- Endoderm → Cloaca → Urogenital sinus ("US")
- Endoderm+Ectoderm → Cloacal membrane
|
|
Urinary system
development |
- Nephrogenic cord → Kidney
- Nephrotome → Pronephros
- Mesonephros (Mesonephric tubules)
- WD → Ureteric bud + Metanephrogenic blastema
- US → Urinary bladder + Urethra + Primary urethral groove + Urachus
|
|
Reproductive system
development |
Primarily internal |
- Gonadal ridge → Indifferent gonad → Gonadal cord (Cortical cords, Testis cords)
- Pronephric duct/Wolffian duct/mesonephric duct + Müllerian duct/paramesonephric ducts (Vaginal plate)
- US → Prostate or Skene's gland
|
|
Primarily external |
- LPM → Genital tubercle → Labioscrotal swelling → Scrotum or Labia majora
- LPM → Genital tubercle → Primordial phallus → Penis or Clitoris
- Peritoneum → Processus vaginalis or Canal of Nuck
|
|
|
Homologues |
- List of homologues of the human reproductive system
|
|
|
|
noco/acba/cong/tumr, sysi/epon, urte
|
proc/itvp, drug (G4B), blte, urte
|
|
|
|
noco/cong/npls, sysi/epon
|
proc/asst, drug (G1/G2B/G3CD)
|
|
|
|
noco/cong/tumr, sysi/epon
|
|
|
|
|
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.
English Journal
- The female gubernaculum: role in the embryology and development of the genital tract and in the possible genesis of malformations.
- Acién P, Sánchez del Campo F, Mayol MJ, Acién M.SourceServices of Obstetrics and Gynaecology, University Hospital of San Juan, Spain. acien@umh.es
- European journal of obstetrics, gynecology, and reproductive biology.Eur J Obstet Gynecol Reprod Biol.2011 Dec;159(2):426-32. Epub 2011 Aug 9.
- The female gubernaculum is an embryonic structure that gives rise to the uterine round ligament and seems to be important in Müllerian development. In the absence of androgens and anti-Müllerian hormone, the paramesonephric or Müllerian ducts complete their invagination and development, interferi
- PMID 21831509
- The testicular descent in human. Origin, development and fate of the gubernaculum Hunteri, processus vaginalis peritonei, and gonadal ligaments.
- Barteczko KJ, Jacob MI.SourceAbteilung für Anatomie und Embryologie, Ruhr-Universität Bochum, Germany. klaus.barteczko@ruhr-uni-bochum.de
- Advances in anatomy, embryology, and cell biology.Adv Anat Embryol Cell Biol.2000;156:III-X, 1-98.
- Testicular descent has to be divided into the turn-out of the testis and epididymis from the abdomen proper and an inner abdominal descent of genital organs. Both events are closely related to and depend on the development and reorganisation of ligaments, mainly the gubernaculum Hunteri. These seemi
- PMID 11008363
Related Links
- The gonad, covered by peritoneum and attached to the posterior abdominal wall by a urogenital mesentery containing its blood vessels, develops a cranial genital ligament (suspensory ligament of the gonad) and caudal genital ligament ...
- The paired Gubernacula (also called the Caudal Genital Ligament) are embryonic structures which begin as undifferentiated mesenchyme attaching to the caudal end of the gonads (testes in males and ovaries in females).
Related Pictures
★リンクテーブル★
[★]
- 英
- caudal genital ligament
- 関
- 尿生殖間膜
[★]
ex.
- 関
- accessory sex organ、generative、genital organ、genital tract、genitalia、genitalium、reproduction、reproductive、reproductive organ、sexual organ
[★]
- 関
- caudalis、caudally