| venous cutdown | <procedure> Creation of a small incised opening in a vein to permit the passage of a needle or cannula for withdrawal of blood, administration of medication, or in diagnostic or therapeutic catheterization. (12 Dec 1998) |
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| venous embolism | Embolism of a vein by an embolus carried in a direction opposite to that of the normal blood current, after being diverted into a smaller vein. Synonym: venous embolism. (05 Mar 2000) |
| venous foramen | <anatomy> A minute inconstant foramen in the greater wing of the sphenoid bone, anterior and medial to the foramen ovale, transmitting a small emissary vein from the cavernous sinus. Synonym: emissary sphenoidal foramen, venous foramen, Vesalius' foramen. (05 Mar 2000) |
| venous gangrene | Moist gangrene due to obstruction in the return circulation. Synonym: venous gangrene. (05 Mar 2000) |
| venous grooves | <anatomy> Grooves occasionally found on the internal surface of the parietal bone, in which veins lie. Synonym: sulci venosi. (05 Mar 2000) |
| venous heart | <anatomy> The right side, including both the atrium and ventricle, of the heart. (05 Mar 2000) |
| venous hum | <cardiology, clinical sign> A brief or continuous noise originating from the neck veins that may be confused with cardiac murmurs, particularly with the continuous murmur of patent ductus arteriosus. Synonym: bruit de diable, nun's murmur. (05 Mar 2000) |
| venous hyperaemia | Hyperaemia due to an obstruction in the flow of blood from the affected part, the venous radicles becoming distended. Synonym: venous hyperaemia. (05 Mar 2000) |
| venous insufficiency | <cardiology, surgery> A condition in which the vein do not channel the flow of blood adequately. most often this condition is seen in the veins of the lower extremities. Symptoms include leg swelling, leg pain and muscle cramps. This condition can predispose to venous thrombosis. (12 Jan 1998) |
| venous lakes | Thin-walled collections of blood, resembling blood blisters, found commonly in the ears and less often on the lips and on the face and neck of elderly sun-damaged men, discontinuous venous cavities or channels; Cf.: marginal sinuses of placenta. In skull radiography, round to oval radiolucent foci in the frontal or parietal bones caused by dilated diploic venous channels. (05 Mar 2000) |
| venous ligament | A thin fibrous cord, lying in the fissure of the ligamentum venosum, the remains of the ductus venosus of the foetus. Synonym: Arantius' ligament, ligamentum ductus venosi, venous ligament. (05 Mar 2000) |
| venous murmur | A murmur heard over a vein. (05 Mar 2000) |
| venous plexus | A vascular network formed by numerous anastomoses between veins. Synonym: plexus venosus. (05 Mar 2000) |
| venous plexus of bladder | A plexus of veins around the fundus and sides of the bladder. Synonym: plexus venosus vesicalis, venous plexus of bladder. (05 Mar 2000) |
| venous plexus of foramen ovale | A venous network around the mandibular nerve connecting the cavernous sinus and the pterygoid plexus. Synonym: plexus venosus foraminis ovalis, rete foraminis ovalis. (05 Mar 2000) |