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This is thought to be due to the large size of its principal branches. At the 11th rib, the diameter is 122mm long and 55mm wide and this is because of the constant pressure. [2] The abdominal aorta is clinically divided into 2 segments: The suprarenal abdominal or paravisceral segment, inferior to the diaphragm but superior to the renal arteries.
The celiac artery is the first major branch of the descending abdominal aorta, branching at a 90° angle. [1] [2] This occurs just below the crus of the diaphragm. [2] This is around the first lumbar vertebra. [3] There are three main divisions of the celiac artery, and each in turn has its own named branches:
In human anatomy, the inferior mesenteric artery (IMA) is the third main branch of the abdominal aorta and arises at the level of L3, supplying the large intestine from the distal transverse colon to the upper part of the anal canal. The regions supplied by the IMA are the descending colon, the sigmoid colon, and part of the rectum. [1]
Abdominal aorta: Celiac a: L gastric a: Common hepatic a: Splenic a: SMA: Renal as: IMA: L common iliac a: R common iliac a: External iliac a: Internal iliac a: Femoral a: Profunda femoris a: Popliteal a: Peroneal a: Anterior tibial a: Posterior tibial a: Dorsalis pedis a
The inferior phrenic artery is a bilaterally paired artery of the abdominal cavity which represents the main source of arterial supply to the diaphragm. Each artery usually arises either from the coeliac trunk or the abdominal aorta, however, their origin is highly variable and the different sites of origin are different for the left artery and right artery.
The median sacral artery arises from the abdominal aorta at the level of the bottom quarter of the third lumbar vertebra. [1] It descends in the middle line in front of the fourth and fifth lumbar vertebrae, the sacrum and coccyx, ending in the glomus coccygeum (coccygeal gland). Minute branches pass from it, to the posterior surface of the rectum.
4 Abdominal aorta. Toggle Abdominal aorta subsection. 4.1 inferior phrenic. 4.2 celiac. 4.3 superior mesenteric. ... communicating branch to the anterior tibial artery;
In human anatomy, the superior mesenteric artery (SMA) is an artery which arises from the anterior surface of the abdominal aorta, just inferior to the origin of the celiac trunk, and supplies blood to the intestine from the lower part of the duodenum through two-thirds of the transverse colon, as well as the pancreas.