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The anterior accessory saphenous vein is a special anterior tributary of the great saphenous vein (GSV), draining the antero-lateral face of the thigh.. It becomes very often insufficient, causing important varicose veins with an autonomous course and often is the only insufficient vein present on a patient.
The accessory hemiazygos vein varies inversely in size with the left superior intercostal vein.. It usually receives the posterior intercostal veins from the 4th, 5th, 6th, 7th, and 8th intercostal spaces between the left superior intercostal vein and highest tributary of the hemiazygos vein; [3] the left bronchial vein sometimes opens into it.
The hemiazygos vein and the accessory hemiazygos vein, when taken together, essentially serve as the left-sided equivalent of the azygos vein. [2] That is, the azygos vein serves to drain most of the posterior intercostal veins on the right side of the body, and the hemiazygos vein and the accessory hemiazygos vein drain most of the posterior intercostal veins on the left side of the body. [2]
The azygos system of veins is considered to be the azygos vein, along with its left-sided counterparts, the hemiazygos vein and the accessory hemiazygos vein. It also creates a cavo-caval anastomosis by offering an alternative, collateral blood flow from the lower half of the body to the superior vena cava, bypassing the inferior vena cava.
Accessory vein may refer to: Accessory cephalic vein, a vein that passes along the radial border of the forearm; Accessory hemiazygos vein, a vein on the left side of the vertebral column; Accessory portal vein; Anterior accessory saphenous vein, a special anterior tributary of the great saphenous vein
In the neck, the accessory nerve crosses the internal jugular vein around the level of the posterior belly of digastric muscle, in front of the vein in about 80% of people, and behind it in about 20%, [9] and in one reported case, piercing the vein. [11] Traditionally, the accessory nerve is described as having a small cranial component that ...
In human anatomy, the cephalic vein (also called the antecubital vein) [1] is a superficial vein in the arm. It originates from the radial end of the dorsal venous network of hand, and ascends along the radial (lateral) side of the arm before emptying into the axillary vein. At the elbow, it communicates with the basilic vein via the median ...
The right hepatic vein is the longest and largest of all the hepatic veins. It drains the liver segments VI and VII in their entirety, and variably participates in the drainage of segments V and VIII; the extent of drainage of the latter two segments by the right hepatic veins as opposed to the middle hepatic vein and possible variant accessory veins determines the calibre of the right hepatic ...