vas (vas) pl. va´ sa [L.] vessel.va´sal
vasa vasorum
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.
vasa va·so·rum (v -sôr  m, -zôr-)pl.n. Small arteries that are distributed to the outer and middle coats of the larger blood vessels and to their corresponding veins. |
vasa vasorum
Etymology: L, vas, vessel
small blood vessels that supply the walls of the arteries and veins.
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