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The abdominal aorta enters the abdomen through the diaphragm at the level of the twelfth thoracic vertebre and continues to just below the umbilical area, where it splits into the right and left common iliac arteries. The aorta supplies oxygenated blood to most of the body.
The aorta can be divided into four sections: the ascending aorta, the aortic arch, the thoracic (descending) aorta and the abdominal aorta. It terminates at the level of L4 by bifurcating into the left and right common iliac arteries.
The abdominal aorta enters the abdomen posterior to the median arcuate ligament and lies anterior and slightly to the left of the anterior aspect of the lumbar vertebrae, with the inferior vena cava lying to its right. Structures crossing the abdominal aorta:
The abdominal aorta begins at T12 and ends at L4, where it divides into the right and left common iliac arteries. It enters the abdomen through the aortic opening of the diaphragm, which is located beneath the median arcuate ligament between the crura of the diaphragm at T12.
The abdominal aorta emerges from the aortic orifice of the diaphragm at the level of T12 vertebra. It begins its course anterior and to the left of the vertebral column and continues downwards for about 10 cm.
The abdominal aorta is a retroperitoneal structure that begins at the diaphragmatic hiatus and ends at the level of the fourth lumbar vertebra, where it bifurcates into the common iliac arteries.
The abdominal aorta gives rise to five major branches: the celiac trunk, superior mesenteric artery, left and right renal arteries, and inferior mesenteric artery. The celiac trunk mainly supplies organs of the foregut, while the superior and inferior mesenteric arteries supply organs of the midgut and hindgut, respectively.
TRY IT FOR FREE TODAY: https://3d4med.com/2rZaWFUThe largest artery in the human body is the Aorta. It originates from the left ventricle of the heart and tr...
Key Terms. abdominal aorta: The largest artery in the abdominal cavity. As part of the aorta, it is a direct continuation of the descending aorta (of the thorax). omentum: Either of two folds of the peritoneum that support the viscera.
The abdominal aorta is a retroperitoneal structure beginning, as an extension of the thoracic aorta, at the aortic hiatus of the diaphragm. The abdominal aorta gradually diminishes in diameter as it descends the abdomen just left of the midline next to the vertebral bodies.