| vena pulmonalis superior sinistra | The vein returning oxygenated blood from the left superior lobe of the lung to the left atrium. Synonym: vena pulmonalis superior sinistra. (05 Mar 2000) |
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| vena recessus lateralis ventriculi quarti | A small vein originating in the cerebellar tonsil, coursing by the lateral recess of the fourth ventricle on its way to terminate in the petrosal vein. Synonym: vein of lateral recess of fourth ventricle. (05 Mar 2000) |
| vena rectalis superior | <anatomy, vein> It drains the greater part of the rectal venous plexus, and ascends between the layers of the mesorectum to the brim of the pelvis, where it becomes the inferior mesenteric vein. As a tributary of the portal vein, it forms a portocaval anastomosis with the middle and inferior rectal veins (caval tributaries) via the rectal venous plexus. Synonym: vena rectalis superior. (05 Mar 2000) |
| vena retromandibularis | <anatomy, vein> It is formed by the union of the superficial temporal and maxillary veins in front of the ear, runs posterior to the ramus of the mandible through the parotid gland, and unites with the posterior auricular vein to form the external jugular vein; it usually has a large communicating branch with the facial vein. Synonym: vena retromandibularis, posterior facial vein, temporomaxillary vein, vena facialis posterior. (05 Mar 2000) |
| vena revehens | Veins in the embryo, passing from the sinusoid vessels in the liver to the inferior vena cava, that develop into the hepatic veins. (05 Mar 2000) |
| vena sacralis mediana | <anatomy, vein> An unpaired vein accompanying the middle sacral artery receiving blood from the sacral venous plexus and emptying into the left common iliac vein. Synonym: vena sacralis mediana. (05 Mar 2000) |
| vena saphena accessoria | <anatomy, vein> An occasional vein running in the thigh parallel to the great saphenous vein which it joins just before the latter empties into the femoral vein. Synonym: vena saphena accessoria. (05 Mar 2000) |
| vena saphena magna | <anatomy, vein> Formed by the union of the dorsal vein of the great toe and the dorsal venous arch of the foot, ascends in front of the medial malleolus, behind the medial condyle of the femur, and traverses the saphenois hiatus in the fascia lata to empty into the femoral vein in the upper part of the femoral triangle. Synonym: vena saphena magna, large saphenous vein, long saphenous vein. (05 Mar 2000) |
| vena saphena parva | <anatomy, vein> Arises on the lateral side of the foot from a union of the dorsal vein of the little toe with the dorsal venous arch, ascends behind the lateral malleolus, along the lateral border of the calcanean tendon and then through the middle of the calf to the lower portion of the popliteal space where it empties into the popliteal vein. Synonym: vena saphena parva, short saphenous vein. (05 Mar 2000) |
| vena scapularis dorsalis | <anatomy, vein> The vena comitans of the descending scapular artery; it is a tributary to the subclavian or the external jugular vein. Synonym: vena scapularis dorsalis. (05 Mar 2000) |
| vena septi pellucidi anterior | Vein draining the anterior part of the transparent septum; it empties into the superior thalamostriate vein. Synonym: vena septi pellucidi anterior. (05 Mar 2000) |
| vena septi pellucidi posterior | Vein draining the posterior part of the transparent septum; it empties into the superior thalamostriate vein. Synonym: vena septi pellucidi posterior. (05 Mar 2000) |
| vena spiralis modioli | The vein running a spiral course in the modiolus of the cochlea; it is tributary to both the labyrinthine vein and the vein of the cochlear canaliculus. Synonym: vena spiralis modioli. (05 Mar 2000) |
| vena splenica | <anatomy, vein> Vein formed by the union (at the hilus of the spleen) of several small veins from the stomach, pancreas, spleen and mesentery. (12 Dec 1998) |
| vena sternocleidomastoidea | <anatomy, vein> It arises in the sternocleidomastoid muscle and accompanies the sternocleidomastoid branch of the occipital artery; it drains into the internal jugular or superior thyroid vein. Synonym: vena sternocleidomastoidea. (05 Mar 2000) |