Internal Iliac Artery Anatomy

There is a lot of anatomical variation in the branches of the anterior trunk of the internal iliac artery but the main branches are the umbilical artery which gives rise to the superior vesical artery the obturator artery the inferior vesical artery which in women is called the vaginal artery the middle rectal artery. It ascends along the side of the bladder and runs upward on the back of the anterior wall of the abdomen to the umbilicus converging toward its fellow of the opposite side.

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The internal iliac artery is the major artery of the pelvis.

Internal iliac artery anatomy. The internal iliac artery begins at the common iliac bifurcation which is anterior to the sacroiliac joint at the level of the intervertebral disc between the l5 and s1 vertebrae. The internal iliac artery also known as the hypogastric artery is the smaller terminal branch of the common iliac artery. This approximately occurs at vertebral level l5 s1.

The internal iliac artery latin. The internal iliac artery runs downward along the lateral wall of the pelvis crosses the linea terminalis and descends to the lesser pelvis through the upper part of the greater sciatic foramen dividing into an anterior and a posterior trunk. Arteria iliaca interna is the main artery of the pelvis that arises from the bifurcation of the common iliac artery.

It originates at the bifurcation of the common iliac artery into its internal and external branches as shown in figure 1. Anatomy the left side of the heart pumps oxygen rich blood to the rest of the body. In the fetus the internal iliac artery is twice as large as the external iliac and is the direct continuation of the common iliac.

Internal iliac artery is divided into anterior and posterior trunk. It supplies the pelvic walls pelvic viscera external genitalia perineum buttock and medial part of the thigh. The obturator nerve is positioned below it while the external iliac vein is medial to it closer than the internal branch to the midline of the body.

The anterior trunk supplies the pelvis visceral organs and the posterior trunk supplies pelvic parietal structures. The artery is 4 cm long and traverses inferoposteriorly to the superior margin of the greater sciatic foramen. The external iliac artery supplies the lower limb and the internal iliac artery is the major vascular supply of the pelvis.

Internal iliac artery hypogastric artery the artery lies at the back of the ureter the tube that carries urine from the kidney to the urinary bladder and in front of the internal iliac vein. Each internal iliac artery courses downward into the pelvic cavity and is the main blood supply to the pelvic organs gluteal muscles and perineum.

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