vas


Also found in: Dictionary, Thesaurus, Financial, Acronyms, Encyclopedia, Wikipedia.

vas

 [vas] (pl. va´sa) (L.)
vessel. adj., adj va´sal.
vas aber´rans
1. a blind tube sometimes connected with the epididymis; a vestigial mesonephric tube.
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 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 the 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 long U-shaped vessels arising from the efferent glomerular arterioles of juxtamedullary nephrons and supplying the renal medulla. Called also arteriolae rectae renis.
va´sa vaso´rum the small nutrient arteries and veins in the walls of the larger blood vessels.

vas

, gen.

va·'sis

, pl.

va·sa

, gen. and pl.

va·so·rum

(vas, vā'sis, vā'să, vā-sō'rŭm), [TA]
A duct or canal conveying any liquid, such as blood, lymph, chyle, or semen.
See also: vessel.
[L. a vessel, dish]

vas

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

vas

(văs)
n. pl. vasa (vā′zə) Anatomy
A vessel or duct.

vas

[vas] pl. vasa
Etymology: L, vessel
any one of the many vessels of the body, especially those that convey blood, lymph, or spermatozoa.

VAS

Abbreviation for visual analogue scale.

vas

, pl. vasa (vas, vā'să) [TA]
A duct or canal conveying any liquid, such as blood, lymph, chyle, or semen.
See also: vessel
[L. a vessel, dish]

vas

(vas) (va'za) plural.vasa [L. vas, vessel]
A vessel or duct.

vas aberrans

1. A narrow tube varying in length from 112 to 14 in (3.8 to 35.6 cm), occasionally found connected with the lower part of the canal of the epididymis or with the commencement of the vas deferens.
2. A vestige of the bile ducts sometimes found in the liver.

vas afferens

An afferent vessel of a lymph node.

vas afferens glomeruli

The afferent arteriole that carries blood to the glomerulus of a renal corpuscle.

vas capillare

A capillary blood vessel.
Enlarge picture
VAS DEFERENS AND OTHER MALE ORGANS

vas deferens

The secretory duct of the testis, a continuation of the epididymis. This slim, muscular tube, approx. 18 in (45.7 cm) long, transports the sperm from each testis to the ejaculatory duct, which empties into the prostatic urethra.
Synonym: ductus deferens See: illustration; genitalia for illus.

vas lymphaticum

One of the vessels carrying the lymph.

vas prominens

Blood vessel on the cochlea's accessory spiral ligament.

vas spirale

A large blood vessel beneath the tunnel of Corti in the basilar membrane.

vas

A vessel or channel conveying fluid. See VAS DEFERENS.

vas

, pl. vasa (vas, vā'să) [TA]
Duct or canal conveying any liquid (e.g., blood).
[L. a vessel, dish]

vas

pl. vasa [L.] a vessel.

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.
References in periodicals archive ?
Anyone responsible for the development of creative content sets visual goals, and VAS helps to ensure that the desired visual hierarchy is achieved," said Kelly Canavan, marketing manager 3M Commercial Graphics Division.
Covers the goals & project plans for current strengths & opportunities of VAS Industry
Exhibit 9: Global Mobile VAS Market by Segments 2012
The way forward in the telecom markets is to differentiate the VAS offerings by content-based and usage-related innovations (pay per use instead of subscriptions) rather than price, says the analyst of this research.
Rocket launches, star parties and meetings aside, VAS members are anticipating a newcomer to the skies.
Slowly the cost of data services are falling & operators & VAS players are trying to enhance the user experience.
Financial advisors were surveyed about their feelings --and their clients' feelings --toward guaranteed income solutions and VAs.
Forecasting revenue growth of mobile VAS and mobile applications in India
As VAS looks to scale our distribution, exclusive partners like The Orchard, Viacom, and Sony will play an increasing role in our evolution," commented Michael Lythcott, CEO of VAS Entertainment.
These challenges will still not affect the growth of VAS in India due to factors like increase in awareness of VAS, increased subscriber base, introduction of 3G services and increased focus on m-Commerce.
As of June 2011, Egypt has had a VAS penetration of 77%.
With declining voice revenues, VAS is going to be a brand differentiation and revenue generation tool for the operators.