| 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) |
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| 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) |
| vena stylomastoidea | <anatomy, vein> It drains the tympanic cavity, traverses the facial canal exiting via the stylomastoid foramen, and empties into the retromandibular vein. Synonym: vena stylomastoidea. (05 Mar 2000) |
| vena subclavia | <anatomy, vein> The continuation of the axillary vein which follows the subclavian artery and then joins the internal jugular vein to form the brachiocephalic vein. (12 Dec 1998) |
| vena sublingualis | <anatomy, vein> Vein which accompanies the sublingual artery in the floor of the mouth, lateral to the hypoglossal nerve; it may join the deep lingual vein to form the lingual vein, or join the vena comitans nerve hypoglossi. Synonym: vena sublingualis. (05 Mar 2000) |
| vena submentalis | <anatomy, vein> A vein situated below the chin, anastomosing with the sublingual vein, connecting with the anterior jugular vein, and emptying into the facial vein. Synonym: vena submentalis. (05 Mar 2000) |
| vena supraorbitalis | <anatomy, vein> Drains the front of the scalp and unites with the supratrochlear veins to form the angular vein. Synonym: vena supraorbitalis. (05 Mar 2000) |