Innominate iliac vein: structure and functions
The innominate iliac vein, also known as the v. anonyma iliaca, is one of the important anatomical structures of the human body. It plays an important role in the venous circulation system and is a key element of the venous drainage system of the lower body.
Anatomy and location of the innominate iliac vein:
The innominate iliac vein is located in the pelvic area. It arises at the level of the sacrum by the confluence of the inferior segmental veins, penetrates the sacroiliac ligament and continues upward into the abdominal cavity, where it merges with the superior vena cava to form the common iliac vein.
Functions of the innominate iliac vein:
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Drainage of the lower pelvis and pelvic organs: The innominate iliac vein collects venous blood from the pelvic organs such as the bladder, rectum, prostate, uterus and ovaries in women. It ensures efficient removal of waste blood and metabolic waste from these organs.
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Drainage of the lower extremities: The iliac innominate vein also collects blood from the lower extremities and transfers it to the superior vena cava system. This helps maintain normal venous circulation in the lower extremities and prevents blood stagnation and swelling.
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Connection with other veins: The innominate iliac vein plays the role of a transition link between the veins of the lower body and the superior vena cava. It connects with the veins of the lower extremities, veins of the organs