| PIIS | posterior inferior iliac spine |
|---|---|
| RIO | right inferior oblique |
| SLI | segment length, inferior |
| TIMI | trhombolysis in myocardial infarction; transmural inferior myocardial infarction |
| vena obturatoria | <anatomy, vein> Formed by the union of tributaries draining the hip joint and the obturator and adductor muscles of the thigh; it enters the pelvis by the obturator canal as venae comitantes of the obturator artery and empties into the internal iliac vein. Synonym: vena obturatoria. (05 Mar 2000) |
|---|---|
| vena occipitalis | <anatomy, vein> Drains the occipital region and empties into the internal jugular vein or the suboccipital plexus. Synonym: vena occipitalis. (05 Mar 2000) |
| vena ophthalmica superior | <anatomy, vein> Begins anteriorly from the nasofrontal vein, passes along the upper part of the medial wall of the orbit, passes through the superior orbital fissure, to empty into the cavernous sinus. Synonym: vena ophthalmica superior. (05 Mar 2000) |
| vena ovarica dextra | <anatomy, vein> Begins as the pampiniform plexus at the hilum of the ovary and opens into the inferior vena cava. Synonym: vena ovarica dextra. (05 Mar 2000) |
| vena ovarica sinistra | <anatomy, vein> Begins as the pampiniform plexus at the hilum of the ovary and empties into the left renal vein. Synonym: vena ovarica sinistra. (05 Mar 2000) |
| vena palatina | <anatomy, vein> Drains the palatine regions and empties into the facial vein. Synonym: vena palatina. (05 Mar 2000) |
| vena petrosa | <anatomy, vein> A short trunk formed by the union of four or five cerebellar and pontine veins opposite the middle cerebellar peduncle; it terminates in the superior petrosal sinus. See: superior petrosal sinus, inferior petrosal sinus. Synonym: vena petrosa. (05 Mar 2000) |
| vena pontomesencephalica anterior | A vein in the midline of the interpeduncular fossa on the superior and anterior aspects of the pons; it communicates with the basal vein superiorly and the petrosal vein inferiorly. Synonym: anterior pontomesencephalic vein. (05 Mar 2000) |
| vena poplitea | <anatomy, vein> The vein formed by the union of the anterior and posterior tibial veins; it courses through the popliteal space and becomes the femoral vein. (12 Dec 1998) |
| vena portae hepatis | <anatomy, vein> A large vein that carries blood from the stomach and intestines to the liver. (09 Oct 1997) |
| vena portalis | <anatomy, vein> A large vein that carries blood from the stomach and intestines to the liver. (09 Oct 1997) |
| vena posterior ventriculi sinistri | Arises on the diaphragmatic surface of the heart near the apex, runs to the left and parallel to the posterior interventricular sulcus, and empties in the coronary sinus. Synonym: vena posterior ventriculi sinistri. (05 Mar 2000) |
| vena preauricularis | <anatomy, vein> One of several veins draining the auricle and acoustic meatus and emptying into the retromandibular vein. Synonym: vena auricularis anterior, vena preauricularis. (05 Mar 2000) |
| vena precentralis cerebelli | <anatomy, vein> An unpaired vein originating in the precentral cerebellar fissure passing anterior and superior to the culmen on its way to terminate in the great cerebral vein. Synonym: vena precentralis cerebelli. (05 Mar 2000) |
| vena prepylorica | <anatomy, vein> A tributary of the right gastric vein that passes anterior to the pylorus at its junction with the duodenum. Synonym: vena prepylorica, Latarget's vein, Mayo's vein. (05 Mar 2000) |