vas deferens (redirected from Ductus deferentes)

vas (vas) pl. va´ sa  [L.] vessel.va´sal

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vas aber´rans 

1. a blind tubule sometimes connected with the epididymis; a vestigial mesonephric tubule.

2. any anomalous or unusual vessel.

va´sa afferen´tia  vessels that convey fluid to a structure or part.

va´sa bre´via  short gastric arteries.

vas capilla´re  a capillary.

vas de´ferens  ductus deferens.

va´sa efferen´tia  vessels that convey fluid away from a structure or part.

va´sa lympha´tica  lymphatic vessels.

va´sa prae´via  presentation, in front of the fetal head during labor, of the blood vessels of the umbilical cord where they enter the placenta.

va´sa rec´ta re´nis  straight arterioles of kidney.

va´sa vaso´rum  the small nutrient arteries and veins in the walls of the larger blood vessels.

va´sa vortico´sa  vorticose veins.

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vas def·er·ens (vs dfr-nz, --rnz)

n. pl. vasa def·er·en·ti·a (df-rnsh-)

The main secretory duct of the testicle, through which semen is carried from the epididymis to the prostatic urethra, where it ends as the ejaculatory duct. Also called deferent duct, spermatic duct, spermiduct.

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Vas deferens

A tube that is a continuation of the epididymis. This tube transports sperm from the testis to the prostatic urethra.

Mentioned in: Testicular Self-Examination

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vas deferens

[def′ərənz] pl. vasa deferentia

Etymology: L, vas + deferens, carrying away

the extension of the epididymis of the testis that ascends from the scrotum into the abdominal cavity and joins the seminal vesicle to form the ejaculatory duct. It is enclosed by fibrous connective tissue with blood vessels, nerves, and lymphatics and passes through the inguinal canal as part of the spermatic cord. Also called deferent duct, ductus deferens, spermatic duct, testicular duct. See also testis.

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vas

pl. vasa [L.] a vessel.

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vas aberrans

1. a blind tube sometimes connected with the epididymis; a vestigial mesonephric tube.

2. any anomalous or unusual vessel.

vas afferentia

vessels that convey fluid to a structure or part.

vas brevia

short vessels such as the gastric arteries.

vas deferens

the excretory duct of the testis which conveys spermatozoa from the tail of the epididymis to the pelvic urethra and which sometimes unites with the excretory duct of the seminal vesicle to form the ejaculatory duct; called also ductus deferens.

vas efferentia

vessels that convey fluid away from a structure or part.

vas lymphatica

lymphatic vessels.

vas recta

straight vessels, such as the long U-shaped vessels arising from the efferent glomerular arterioles of juxtamedullary nephrons and supplying the renal medulla.

vas vasorum

the small nutrient arteries and veins in the walls of the larger blood vessels.