| vasa lymphatica | The vessels that convey the lymph; they anastomose freely with each other. Synonym: vasa lymphatica, absorbent vessels, lymphatic vessels, lymphatics. (05 Mar 2000) |
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| vasa nervorum | Blood vessels supplying the nerves. (12 Dec 1998) |
| vasa previa | The umbilical cord vessels come before the foetal head during delivery. (12 Dec 1998) |
| vasa recta | Straight vessels into which the efferent arteriole of the juxtamedullary glomeruli breaks up; they form a leash of vessels which, arising at the bases of the pyramids, run through the renal medulla toward the apex of each pyramid, then reverse direction in a hairpin turn, and run straight back again toward the base of the pyramid as venae rectae. Synonym: straight seminiferous tubule. Synonym: arteriolae rectae. (05 Mar 2000) |
| vasa sanguinea retinae | The blood vasculature of the retina, including the branches and tributaries of the central retinal artery and vein, respectively, and the vascular circle of the optic nerve. Synonym: vasa sanguinea retinae. (05 Mar 2000) |
| vasa vasorum | Nutrient blood vessels which supply the walls of large arteries or veins. (12 Dec 1998) |
| vasa vorticosa | Several veins (usually four) from the vascular tunic formed of veins accompanying the posterior ciliary arteries and the ciliary body; then drain into the superior or inferior ophthalmic vein. Synonym: venae vorticosae, venae choroideae oculi, choroid veins of eye, Stensen's veins, vasa vorticosa, vorticose veins. (05 Mar 2000) |
| Ferrein's vasa aberrantia | Biliary canaliculi that are not connected with hepatic lobules. (05 Mar 2000) |