| vena ileocolica | <anatomy, vein> A large tributary of the superior mesenteric vein that runs parallel to the ileocolic artery and drains the terminal ileum, appendix, caecum, and the lower part of the ascending colon. Synonym: vena ileocolica. (05 Mar 2000) |
|---|---|
| vena iliaca communis | <anatomy, vein> Formed by the union of the external and internal iliac veins at the brim of the pelvis and passes upward behind the internal iliac artery to the right side of the body of the fifth lumbar vertebra where it unites with its fellow of the opposite side to form the inferior vena cava; the left common iliac vein is submitted to a pulsating compression by the right common iliac artery against the vertebral column which may result in partial obstruction of the vein. Synonym: vena iliaca communis. (05 Mar 2000) |
| vena iliaca externa | <anatomy, vein> A direct continuation of the femoral vein superior to the inguinal ligament, uniting with the internal iliac vein to form the common iliac vein. Synonym: vena iliaca externa. (05 Mar 2000) |
| vena iliaca interna | <anatomy, vein> Runs from the upper border of the greater sciatic notch to the brim of the pelvis where it joins the external iliac vein to form the common iliac vein; it drains most of the territory supplied by the internal iliac artery. Synonym: vena iliaca interna. (05 Mar 2000) |
| vena iliolumbalis | <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) |
| vena innominata | Archaic term for brachiocephalic veins. (05 Mar 2000) |
| vena intercostalis superior dextra | <anatomy, vein> A tributary of the azygos vein formed by the union of the right second, third, and fourth posterior intercostal veins. Synonym: vena intercostalis superior dextra. (05 Mar 2000) |
| vena intercostalis superior sinistra | <anatomy, vein> The vein formed by the union of the left second, third, and fourth intercostal veins; it passes forward across the arch of the aorta to empty into the left brachiocephalic vein and frequently communicates also with the accessory hemiazygos vein. Synonym: vena intercostalis superior sinistra. (05 Mar 2000) |
| vena intercostalis suprema | <anatomy, vein> The vein draining the first intercostal space into either the vertebral or the brachiocephalic vein. Synonym: vena intercostalis suprema, supreme intercostal vein. (05 Mar 2000) |
| vena intermedia antebrachii | It begins at the base of the dorsum of the thumb, curves around the radial side, ascends the middle of the forearm, and just below the bend of the elbow divides into the intermediate basilic and intermediate cephalic veins; sometimes it divides lower down, one branch going to the basilic vein, the other to the intermediate vein of the elbow. Synonym: vena intermedia antebrachii, intermediate antebrachial vein, intermediate vein of forearm, median vein of forearm, vena mediana antebrachii. (05 Mar 2000) |
| vena intermedia basilica | <anatomy, vein> The medial branch of the median antebrachial vein which joins the basilic vein. Synonym: vena intermedia basilica, median basilic vein, vena mediana basilica. (05 Mar 2000) |
| vena intermedia cephalica | <anatomy, vein> The lateral branch of the median antebrachial vein that joins the cephalic vein near the elbow. Synonym: vena intermedia cephalica, median cephalic vein, vena mediana cephalica. (05 Mar 2000) |
| vena intermedia cubiti | <anatomy, vein> A vein which passes across the anterior aspect of the elbow from the cephalic vein to the basilic vein; commonly this vein is replaced by intermediate basilic and intermediate cephalic veins. The median cubital vein is often used for venipuncture. Synonym: vena intermedia cubiti, intermediate cubital vein, vena mediana cubiti. (05 Mar 2000) |
| vena intervertebralis | <anatomy, vein> One of numerous veins accompanying the spinal nerves through the intervertebral foramina, draining spinal cord and vertebral venous plexuses, and emptying in the neck into the vertebral vein, in the thorax into the intercostal veins, in the lumbar and sacral regions into the lumbar and sacral veins. Synonym: vena intervertebralis. (05 Mar 2000) |
| vena jugularis anterior | <anatomy, vein> It arises below the chin from veins draining the lower lip and mental region, descends the anterior portion of the neck superficially, and terminates in the external jugular vein at the lateral border of the scalenus anterior muscle. Synonym: vena jugularis anterior. (05 Mar 2000) |