WordNet
- the several highly convoluted tubules that lead from the rete testis to the vas deferens and form the head of the epididymis
- of nerves and nerve impulses; conveying information away from the CNS; "efferent nerves and impulses" (同)motorial
PrepTutorEJDIC
- (血管・導管が)輸出性の,導出性の;(神経が)遠心性の
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2016/01/25 17:27:04」(JST)
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Efferent ducts |
The location of the efferent ducts within an adult human testicle
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Vertical section of the testis, to show the arrangement of the ducts. (Labeled as vasa efferentia as top center.)
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Details |
Latin |
Ductus efferentes testis |
Precursor |
Wolffian duct |
Dorlands
/Elsevier |
d_29/12314687 |
Anatomical terminology
[edit on Wikidata]
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The efferent ducts (or efferent ductules or ductuli efferentes or ductus efferentes or vasa efferentia) connect the rete testis with the initial section of the epididymis.
There are two basic designs for efferent ductule structure:
- a) multiple entries into the epididymis, as seen in most large mammals. In humans and other large mammals, there are approximately 15–20 efferent ducts, which also occupy nearly one third of the head of the epididymis.
- b) single entry, as seen in most small animals such as rodents, whereby the 3–6 ductules merge into a single small ductule prior to entering the epididymis.
The ductuli are unilaminar and composed of columnar ciliated and non-ciliated (absorptive) cells. The ciliated cells serve to stir the luminal fluids, possibly to help ensure homogeneous absorption of water from the fluid produced by the testis, which results in an increase in the concentration of luminal sperm. The epithelium is surrounded by a band of smooth muscle that helps to propel the sperm toward the epididymis.
Additional images
External links
- Anatomy photo: Reproductive/mammal/testis0/testis4 - Comparative Organology at University of California, Davis – "Mammal, testis overview"
- Anatomy photo:36:10-0100 at the SUNY Downstate Medical Center – "Inguinal Region, Scrotum and Testes: Reflection of the Head of the Epididymis"
- Histology image: 16903loa – Histology Learning System at Boston University
- Diagram/Quiz (cancer.gov)
Male reproductive system
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Internal |
Seminal tract |
Testes |
- layers
- Tunica vaginalis
- Tunica albuginea
- Tunica vasculosa
- Appendix
- Mediastinum
- Lobules
- Septa
- Leydig cell
- Sertoli cell
- Blood–testis barrier
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Spermatogenesis |
- Spermatogonium
- Spermatocytogenesis
- Spermatocyte
- Spermatidogenesis
- Spermatid
- Spermiogenesis
- Spermatozoon
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Other |
- Seminiferous tubules
- Tubuli seminiferi recti
- Rete testis
- Efferent ducts
- Epididymis
- Paradidymis
- Spermatic cord
- Vas deferens
- Ejaculatory duct
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Accessory glands |
- Seminal vesicles
- Prostate
- Urethral crest
- Seminal colliculus
- Prostatic utricle
- Ejaculatory duct
- Prostatic sinus
- Prostatic ducts
- Bulbourethral glands
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External |
Penis |
- root
- Crus
- Bulb
- Fundiform ligament
- Suspensory ligament
- body
- Corpus cavernosum
- Corpus spongiosum
- glans
- fascia
- Tunica albuginea
- Septum of the penis
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Urinary tract |
- Internal urethral orifice
- Urethra
- Prostatic
- Intermediate
- Spongy
- Navicular fossa
- External urethral orifice
- Lacunae of Morgagni
- Urethral gland
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Scrotum |
- layers
- skin
- Dartos
- External spermatic fascia
- Cremaster
- Cremasteric fascia
- Internal spermatic fascia
- Perineal raphe
- Scrotal septum
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Index of reproductive medicine
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Description |
- Anatomy
- Physiology
- Development
- sex determination and differentiation
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Disease |
- Infections
- Congenital
- Neoplasms and cancer
- male
- female
- gonadal
- germ cell
- Other
- Symptoms and signs
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Treatment |
- Procedures
- Drugs
- benign prostatic hypertrophy
- erectile dysfunction and premature ejaculation
- sexual dysfunction
- infection
- hormones
- androgens
- estrogens
- progestogens
- GnRH
- prolactin
- Assisted reproduction
- Birth control
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UpToDate Contents
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- 1. 臍帯卵膜付着と前置血管 velamentous umbilical cord insertion and vasa previa
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- 5. 胎盤の肉眼的評価 gross examination of the placenta
English Journal
- Male reproductive system of the fish ectoparasite Argulus bengalensis (Crustacea: Branchiura).
- Banerjee A1, Manna S, Saha SK.
- Journal of morphology.J Morphol.2015 May;276(5):540-9. doi: 10.1002/jmor.20364. Epub 2015 Jan 8.
- The male reproductive system of the fish ectoparasite Argulus bengalensis was reconstructed with serial histological sections through longitudinal and transverse planes and the description was re-evaluated after the discovery of spermatophore. The study revealed that the testis of A. bengalensis con
- PMID 25581294
- Hexabothriids of devil rays (Mobulidae): new genus and species from gill of Mobula hypostoma in the Northern Gulf of Mexico and redescription of a congener from Mobula rochebrunei in the eastern Atlantic Ocean.
- Patella R1, Bullard SA.
- The Journal of parasitology.J Parasitol.2013 Oct;99(5):856-67. doi: 10.1645/12-153.1. Epub 2013 May 3.
- A new species of Hexabothriidae, Mobulicola enantiomorphica n. gen., n. sp., is described on the basis of specimens collected from the gill of a lesser devil ray, Mobula hypostoma (Bancroft, 1831) (Rajiformes: Mobulidae), captured in the northern Gulf of Mexico (30°13'49.22″N, 88°20'31.69″W) o
- PMID 23641805
- Pseudohermaphrodite presented as an irreducible inguinal hernia.
- Kshirsagar AY1, Dombale VD, Zaware SU.
- Journal of the Indian Medical Association.J Indian Med Assoc.2007 Sep;105(9):528, 530.
- Absence of antimuellerian hormone or defective functioning of antimullerian hormone type II receptors give rise to a type of male pseudohermaphroditism known as 'persistent muellerian duct syndrome'. Such patients are phenotypically male with 46 XY karyotype and well developed muellerian duct deriva
- PMID 18338479
Japanese Journal
- The Excurrent Duct System of Sperm Transport in Rana cyanophlyctis, Rana limnocharis, Polypedates maculatus, Microhyla rubra, Bufo melanostictus and Bufo fergusonii(Reproductive Biology)
- Hiragond N.C.,Saidapur S.K.
- Zoological science 17(4), 453-458, 2000-05-20
- … cyanophlyctis intratesticular efferent ductules arise from seminiferous tubules and join vasa efferentia. … limnocharis the sperm from seminiferous tubules traverse to the cranial nephrons through intratesticular efferent ductules followed by 6-8 branched vasa efferentia. … The LCD is drained by 8-12 vasa efferentia that are connected to nephrons directly ; …
- NAID 110003371157
- 岩本 晃明,河野 正二郎,矢島 通孝,長田 尚夫
- 日本泌尿器科學會雜誌 86(5), 979-984, 1995-05-20
- 最近,閉塞性無精子症患者で精巣輸出管あるいは精巣上体管から採取された精子が活発に運動していることが報告されている.そこで精巣内精子の運動性およびその意義について検討した.対象は無精子症19例,乏精子症11例,前立腺癌3例,成人停留精巣2例(1例は無精子症例の停留側の精巣),精巣腫瘍2例,精巣上体膿瘍1例である.方法は精巣生検時,精巣摘出症例はその一部をHam's F12液中で細切し検鏡し,尾部をも …
- NAID 110003088717
- The effects of ligation of vas deferens,corpus epididymidis and vasa efferentia on the testicular function in rats
- Kuwahara Masaaki
- Tohoku Journal of Experimental Medicine 120(3), p251-257, 1976-11-00
- NAID 40005306106
Related Links
- the testis communicates with the Wolffian duct via a sequential arrangement of vasa efferentia, renal corpuscles, and efferent epididymal ducts; no longitudinal duct or afferent epididymal ducts were observed), many of which have not ...
- vasa efferentia play noun plural vasa ef·fer·en·tia \-ˌef-ə-ˈren-ch(ē-)ə\ Writing? Check your grammar now! Medical Definition of vasa efferentia: the 12 to 20 ductules that lead from the rete testis to the vas deferens and ...
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- 関
- centrifugal、distal、efferent nerve、efferent neuron、efferent pathway、efferents、export
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- 関
- canal、conduit、duct、ductal、ductus、meatus、pipe、tubal、tube、vessel