Iliac vein
In human anatomy
Human anatomy
Human anatomy is primarily the scientific study of the morphology of the human body. Anatomy is subdivided into gross anatomy and microscopic anatomy. Gross anatomy is the study of anatomical structures that can be seen by the naked eye...

, iliac vein refers to several anatomical structures located in the pelvis
In human anatomy, the pelvis is the lower part of the trunk, between the abdomen and the lower limbs .The pelvis includes several structures:...

  • External iliac vein
    External iliac vein
    The external iliac veins are large veins that connect the femoral veins to the common iliac veins. Their origin is at the inferior margin of the inguinal ligaments and they terminate when they join the internal iliac veins ....

     - terminates at the common iliac vein, drains the femoral vein
    Femoral vein
    In the human body, the femoral vein is a blood vessel that accompanies the femoral artery in the femoral sheath. It begins at the adductor canal and is a continuation of the popliteal vein...

  • Internal iliac vein
    Internal iliac vein
    The internal iliac vein begins near the upper part of the greater sciatic foramen, passes upward behind and slightly medial to the Internal iliac artery and, at the brim of the pelvis, joins with the external iliac vein to form the common iliac vein.-Tributaries:With the exception of the fetal...

     - terminates at the common iliac vein, drains pelvic organs and perineum
    In human anatomy, the perineum is a region of the body including the perineal body and surrounding structures...

  • Common iliac vein
    Common iliac vein
    In human anatomy, the common iliac veins are formed by the external iliac veins and internal iliac veins and together, in the abdomen at the level of the fifth lumbar vertebrae, form the inferior vena cava. They drain blood from the pelvis and lower limbs....

     - formed by the external and internal iliac veins, drains into the inferior vena cava
    Inferior vena cava
    The inferior vena cava , also known as the posterior vena cava, is the large vein that carries de-oxygenated blood from the lower half of the body into the right atrium of the heart....

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