| venae occipitales | The superior cerebral veins draining the occipital cortex and emptying into the superior sagittal sinus and the transverse sinus. Synonym: venae occipitales. (05 Mar 2000) |
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| venae oesophageae | Series of veins draining the submucous venous plexus of the oesophagus; proceding inferiorly from the cervical portion of the oesophagus, they drain to the inferior thyroid vein, the superior intercostal veins, the azygos, accessory hemiazygos and hemiazygos veins, all of which are ultimately tributaries of the superior vena cava; the most inferior oesophageal veins, from the cardiac portion of the oesophagus, drain via the oesophageal branches of the left gastric vein, a tributary of the portal vein. Thus, the submucosal veins of the inferior oesophagus form a portocaval anastomoses, and are subject to the formation of varicosities in portal hypertension. Synonym: venae oesophageae. (05 Mar 2000) |
| venae palpebrales | Veins draining the superior eyelid posteriorly as tributaries of the superior ophthalmic vein. Synonym: venae palpebrales, veins of eyelids. (05 Mar 2000) |
| venae palpebrales inferiores | Veins of inferior eyelid; veins originatin gin the inferior eyelid and emptying into the angular vein. Synonym: venae palpebrales inferiores, veins of inferior eyelid. (05 Mar 2000) |
| venae palpebrales superiores | Veins draining the superior eyelid anteriorly into the angular vein. Synonym: venae palpebrales superiores, veins of superior eyelid. (05 Mar 2000) |
| venae pancreaticae | Veins draining the pancreas, emptying into the splenic vein and the superior mesenteric vein. Synonym: venae pancreaticae. (05 Mar 2000) |
| venae pancreaticoduodenales | Veins that accompany the superior and inferior pancreaticoduodenal arteries, emptying into the superior mesenteric or portal vein. Synonym: venae pancreaticoduodenales. (05 Mar 2000) |
| venae paraumbilicales | Several small veins arising from cutaneous veins about the umbilicus running along the round ligament of the liver, and terminating as accessory portal veins in the substance of this organ; they constitute a portocaval anastomosis and are subject to varicosity druign portal hypertension; varicose paraumbilical veins form the "caput medussae". Synonym: venae paraumbilicales, Sappey's veins. (05 Mar 2000) |
| venae parietales | The superficial veins draining the parietal cerebral cortex and emptying into the superior sagittal sinus. Synonym: venae parietales. (05 Mar 2000) |
| venae parotidea | Branches draining part of the parotid gland and emptying into the retromandibular vein. Synonym: venae parotidea, posterior parotid veins. (05 Mar 2000) |
| venae pectorales | Veins draining the pectoral muscles and emptying directly into the subclavian vein. Synonym: venae pectorales. (05 Mar 2000) |
| venae pedunculares | Small tributaries of the basal vein from the cerebral peduncle. Synonym: peduncular veins. (05 Mar 2000) |
| venae perforantes | The veins that accompany the perforating arteries from the profunda femoris artery; they drain blood from the vastus lateralis and hamstring muscles and terminate in the profunda femoris vein. Synonym: venae perforantes. (05 Mar 2000) |
| venae pericardiacae | Several small veins from the pericardium emptying into the brachiocephalic veins or superior vena cava. Synonym: venae pericardiacae. (05 Mar 2000) |
| venae pericardiacophrenicae | The veins accompanying the pericardiacophrenic artery and emptying into the brachiocephalic veins or superior vena cava. Synonym: venae pericardiacophrenicae. (05 Mar 2000) |