vasa

vas

[vas] pl. vasa

Etymology: L, vessel

any one of the many vessels of the body, especially those that convey blood, lymph, or spermatozoa.

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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.

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vasa

[L.] plural of vas.