abdominal aorta

abdominal part of aorta

Abdominal part of aorta: the distal part of the descending aorta, which is the continuation of the thoracic part and gives rise to the inferior phrenic, lumbar, median sacral, superior and inferior mesenteric, middle suprarenal, renal, and testicular or ovarian arteries, and celiac trunk[BTO]. The abdominal aorta is the largest artery in the abdominal cavity. As part of the aorta, it is a direct continuation of descending aorta(of the thorax). [WP,unvetted].

类型 Vessel
身体系统 Cardiovascular
上级结构 section of aorta
拉丁名称 abdominal part of aorta
FMA ID 3789

常见问题

What is the abdominal aorta?
The abdominal aorta (known in anatomical terminology as abdominal part of aorta) is the largest artery in the abdominal cavity. It is a continuation of the thoracic (descending) aorta and supplies oxygenated blood to most of the abdominal organs, the pelvis, and the lower limbs.
Where is the abdominal aorta located?
The abdominal aorta runs vertically along the midline of the abdomen, lying just in front of the lumbar vertebral column. It begins at the aortic hiatus of the diaphragm and ends by dividing into the two common iliac arteries at approximately the level of the fourth lumbar vertebra.
What is the function of the abdominal aorta?
The abdominal aorta distributes oxygenated blood to the abdominal organs through major branches including the celiac trunk, superior and inferior mesenteric arteries, renal arteries, and gonadal arteries, as well as to the diaphragm, lumbar muscles, and pelvic structures.
What conditions can affect the abdominal aorta?
The most clinically significant condition affecting the abdominal aorta is an abdominal aortic aneurysm (AAA), in which the vessel wall weakens and balloons outward, risking life-threatening rupture. Atherosclerosis and aortic dissection can also affect this structure.
How is the abdominal aorta different from the thoracic aorta?
While both are segments of the same aorta, the thoracic aorta supplies the chest organs and upper body structures, whereas the abdominal aorta supplies the abdominal viscera and lower extremities. The abdominal portion begins after the aorta passes through the diaphragm.

相关结构

pericardial sac pericardium artery arterial subtree proepicardium proepicardial cluster pulmonary capillary plexus capillary network of lung pulmonary lymphatic vessel lymphatic vessel of lung pulmonary lymph node intrapulmonary lymph node pulmonary vascular system pulmonary circulatory system pericardial cavity cavitas pericardiaca

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Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.