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The thoracic aorta is a continuation of the descending aorta and becomes the abdominal aorta when it passes through the diaphragm. The initial part of the aorta , the ascending aorta , rises out of the left ventricle, from which it is separated by the aortic valve .
The aorta begins to descend in the thoracic cavity and is consequently known as the thoracic aorta. After the aorta passes through the diaphragm , it is known as the abdominal aorta . The aorta ends by dividing into two major blood vessels, the common iliac arteries and a smaller midline vessel, the median sacral artery .
It makes aortic surgery difficult, especially aortic cross-clamping, and incisions may result in excessive aortic injury and/or arterial embolism. [6] The ascending aorta segment is of significant due to its susceptibility to aortic dissection, two times more than in the descending aorta. Early detection of dissection is critical because it ...
A thoracic aortic aneurysm is an aortic aneurysm that presents primarily in the thorax. A thoracic aortic aneurysm is the "ballooning" of the upper aspect of the aorta, above the diaphragm. Untreated or unrecognized they can be fatal due to dissection or "popping" of the aneurysm leading to nearly instant death.
The thoracic cavity (or chest cavity) is the chamber of the body of vertebrates that is protected by the thoracic wall (rib cage and associated skin, muscle, and fascia). The central compartment of the thoracic cavity is the mediastinum .
The descending aorta anatomically consists of two portions or segments, the thoracic and the abdominal aorta, in correspondence with the two great cavities of the trunk in which it is situated. Within the abdomen, the descending aorta branches into the two common iliac arteries which serve the pelvis and eventually legs.
Ritter Rules are a compilation of reminders, symptoms, and risk factors designed to prevent the misdiagnosis of thoracic aortic dissection. [54] The rules were named after Three's Company star John Ritter, who died from a thoracic aortic dissection in 2003 after he was misdiagnosed and mistakenly treated for a heart attack by his two doctors. [55]
3 Thoracic aorta. 4 Abdominal aorta. Toggle Abdominal aorta subsection. ... It is a portion of the aorta commencing at the upper part of the base of the left ...