| iliolumbar vein | <anatomy, vein> Accompanying the artery of the same name, anastomosing with the lumbar and deep circumflex iliac veins, and emptying into the internal iliac vein. Synonym: vena iliolumbalis. (05 Mar 2000) |
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| inferior anastomotic vein | <anatomy, vein> An inconstant vein that passes from the superficial middle cerebral vein posteriorly over the lateral aspect of the temporal lobe to enter the transverse sinus. Synonym: vena anastomotica inferior, Browning's vein, Labbe's vein. (05 Mar 2000) |
| inferior basal vein | <anatomy, vein> Tributary to the common basal vein draining the medial and posterior part of the inferior lobe in each lung. Synonym: vena basalis inferior. (05 Mar 2000) |
| inferior cardiac vein | <anatomy, vein> Begins at the apex of the heart (where it anastomoses with the great cardiac vein), and ascends within the posterior interventricular sulcus to the coronary sinus. Synonym: vena cordis media, inferior cardiac vein. (05 Mar 2000) |
| inferior choroid vein | <anatomy, vein> A small vein draining the lower part of the choroid plexus of the lateral ventricle into the basal vein. Synonym: vena choroidea inferior. (05 Mar 2000) |
| inferior epigastric vein | <anatomy, vein> Corresponds to the artery of the same name and empties into the external iliac vein just proximal to the inguinal ligament. Synonym: vena epigastrica inferior, deep epigastric vein. (05 Mar 2000) |
| inferior labial vein | <anatomy, vein> A tributary of the facial vein draining the lower lip. Synonym: vena labialis inferior. (05 Mar 2000) |
| inferior laryngeal vein | <anatomy, vein> The vein passing from the lower part of the larynx to the plexus thyroideus impar. Synonym: vena laryngea inferior. (05 Mar 2000) |
| inferior mesenteric vein | <anatomy, vein> A continuation of the superior rectal vein at the brim of the pelvis, ascending to the left of the aorta behind the peritoneum and emptying into the splenic vein or into the superior mesenteric vein or rarely in the angle between these veins. Synonym: vena mesenterica inferior. (05 Mar 2000) |
| inferior ophthalmic vein | <anatomy, vein> Arises from the inferior palpebral and lacrimal veins and divides into two terminal branches, one of which runs to the pterygoid plexus while the other joins the superior ophthalmic vein or empties into the cavernous sinus. Synonym: vena ophthalmica inferior. (05 Mar 2000) |
| inferior part of lingular branch of left pulmonary vein | <anatomy, vein> The vein draining the inferior lingular bronchopulmonary segment of the left lung. Synonym: pars inferior rami lingularis. (05 Mar 2000) |
| inferior phrenic vein | <anatomy, vein> The vein that drains the substance of the diaphragm and empties on the right side into the inferior vena cava, on the left side into the left suprarenal vein; often a second vein on the left side passes transversely across the diaphragm anterior to the oesophageal hiatus to enter the inferior vena cava. Synonym: vena phrenica inferior. (05 Mar 2000) |
| inferior thyroid vein | <anatomy, vein> Unpaired vein formed by veins from the isthmus and lateral lobe of the thyroid gland and from the plexus thyroideus impar; it terminates in the left brachiocephalic vein. Synonym: vena thyroidea inferior, vena thyroidea ima. (05 Mar 2000) |
| inferior vein of vermis | A vein draining part of the inferior part of the cerebellum; it courses on the inferior surface of the vermis and terminates in the straight sinus. Synonym: vena vermis inferior. (05 Mar 2000) |
| inferior ventricular vein | Vein draining the deep white matter of the superior and lateral portions of the temporal lobe; it begins in the body of the lateral ventricle and exits from the choroid fissure of the inferior horn where it joins the basal vein. Synonym: inferior ventricular vein. (05 Mar 2000) |