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Related to abdominal aorta: common iliac artery, celiac trunk


(āôr`tə), primary artery of the circulatory systemcirculatory system,
group of organs that transport blood and the substances it carries to and from all parts of the body. The circulatory system can be considered as composed of two parts: the systemic circulation, which serves the body as a whole except for the lungs, and the
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 in mammals, delivering oxygenated blood to all other arteries except those of the lungs. The human aorta, c.1 in. (2.54 cm) in diameter, originates at the left ventricle of the heartheart,
muscular organ that pumps blood to all parts of the body. The rhythmic beating of the heart is a ceaseless activity, lasting from before birth to the end of life. Anatomy and Function

The human heart is a pear-shaped structure about the size of a fist.
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. After supplying the coronary arteries that nourish the heart itself, the aorta extends slightly toward the neck to feed branches serving the head and arms. It then arches down toward the waist, directing blood into the arterial system of the chest. Entering the abdomen through the aortic hiatus, an opening in the diaphragm, the aorta branches off to supply the stomach, kidneys, intestines, gonads, and other organs through extensive arterial networks. It finally divides into the two iliac arteries carrying blood to the legs. The elasticity of the aorta wall permits it to pulse in rhythm with the heartbeat, thus helping to propel blood through the body.



the main artery of the greater circulatory system, which supplies blood to all organs of the body.

The wall of the aorta consists of three membranes, that is, the interior (a layer of endothelial cells), intermediate (numerous rows of elastic fibers), and exterior (bundles of connective tissue fibers). Because of the elasticity of the aorta’s walls an uninterrupted flow of blood in the arteries is assured. In man, mammals, and birds, the aorta emerges from the left ventricle of the heart, forming an enlargement at its very beginning, called the aortic spindle, goes up (ascending aorta), turns back and to the left in man and mammals (arch of the aorta) and back and to the right in birds, and goes down (descending or dorsal aorta). In reptiles there are two aortic arches, that is, the right, or arterial, arch, emerging from the left ventricle of the heart; and the left, or venous, arch from the right ventricle. When they unite, they form a common aorta with mixed blood. In amphibians an arterial cone emerges from the only ventricle, and from it one pair (in ecaudates) or two pairs (in caudates) of aortic arches branch out, which form the dorsal aorta when they unite. In fishes and cyclostomes the ventricle passes into the abdominal aorta, which carries venous blood through the system of arterial arches into the gills (in fishes) and gill pouches (in cyclostomes). The blood which is oxygenated there is collected in the dorsal aorta. Of the invertebrates, mollusks and arthropods have aortas.


Ostroverkhov, G. E., D. N. Lubotskii, and Iu. M. Bomash. Kurs operativnoi khirurgii i topograficheskoi anatomii,2nd ed. Moscow, 1964.
Cole, W. H. Textbook of Surgery,8th ed. New York, 1963.


The main vessel of systemic arterial circulation arising from the heart in vertebrates.
(invertebrate zoology)
The large dorsal or anterior vessel in many invertebrates.


the main vessel in the arterial network, which conveys oxygen-rich blood from the heart to all parts of the body except the lungs
References in periodicals archive ?
The defining feature of this malformation is an aortic narrowing at the level of the sinotubular junction, but in some cases there is narrowing of the entire abdominal aorta and arch branches (see Fig.
2,3) In this patient, a small abdominal aorta and a flattened inferior vena cava were associated with the stasis of contrast material in the venous system and the dependent portions of the right side of the body on the CT images acquired 70 seconds after the start of IV contrast administration.
Because of pain and persistent fever despite antibiotics, abdominal CT was performed and revealed calcification of the abdominal aorta.
Incorrect placement of the curved needle could damage the presacral vessels, inferior vena cava and abdominal aorta, which run through close to the ligament, posing a risk of hemorrhage and requiring blood transfusion, he said.
Some patients may have more than one TAA or may also have an aneurysm of the abdominal aorta.
Contract notice: (paa) 2015-1-41 pacp stent delivery thoracic and abdominal aorta.
Abdominal aortic aneurism (AAA) repair: A surgery to treat an enlarged abdominal aorta has a 13-percent variation in predicted survival rates -from 85.
Most aortic aneurysms occur in the abdominal aorta and the usual cause is a condition known as artherosclerosis - a build up of fatty deposits.
36% of patients with an aneurysm of the abdominal aorta.