- A duct or canal conveying any liquid, such as blood, lymph, chyle, or semen. SEE ALSO: vessel. [L. a vessel, dish]- v. aberrans hepatis, pl.vasa aberrantia hepatis blind and/or atrophic bile duct remnants in the fibrous appendix and in the capsule of the liver at the margins of the left lobe and the groove for the inferior vena cava.- v. aberrans of Roth an occasional diverticulum of the rete testis or of the efferent ductules of the testis.- vasa aberrantia SYN: aberrant ductules, under ductule.- v. anastomoticum [TA] SYN: anastomotic vessel.- vasa brevia SYN: short gastric arteries, under artery.- v. collaterale SYN: collateral vessel.- v. deferens, pl.vasa deferentia SYN: ductus deferens.- v. efferens, pl.vasa efferentia 1. a vein carrying blood away from a part; SYN: efferent lymphatic, v. lymphaticum efferens. 2. SYN: efferent glomerular arteriole. 3. SYN: efferent ductules of testis, under ductule.- vasa lymphatica SYN: lymph vessels, under vessel.- v. lymphaticum SYN: lymphatic (3).- v. lymphaticum afferens SYN: afferent lymphatic.- v. lymphaticum efferens SYN: v. efferens (1).- vasa nervorum blood vessel s supplying nerves.- vasa previa umbilical vessels presenting in advance of the fetal head, usually traversing the membranes and crossing the internal cervical os.- v. prominens ductus cochlearis a blood vessel in the substance of the spiral prominence of the cochler duct.- 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;- vasa recta renis [TA] arteries penetrating and supplying the renal medulla (pyramids). SYN: arteriolae rectae [TA], straight arteries.- v. sanguineum [TA] SYN: blood vessel.- v. spirale a blood vessel, larger than its fellows, running in the tympanic layer of the basilar membrane just beneath the tunnel of Corti.- vasa vasorum [TA] small arteries distributed to the outer and middle coats of the larger blood vessel s, and their corresponding veins. SYN: vessels of vessels.- vasa vorticosa SYN: vorticose veins, under vein.* * *vagal afferents; vascular; vascular access service; ventricular assist system; ventriculo-atrial shunt; Verapamil Angioplasty Study; vesicle attachment site; vestibular aqueduct syndrome; Veterans Adjustment Scale; vibro-acoustic stimulation; video-assisted surgery; viral arthritis syndrome; Visual Analogue Scale
* * *VAS abbr visual analog scale
* * *n. (pl. vasa)a vessel or duct.
* * *(vas) pl. vaґsa [L.] vessel; a canal for carrying fluid, especially one carrying blood, lymph, or spermatozoa.
Medical dictionary. 2011.