artery


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artery,

blood vessel that conveys blood away from 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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. Except for the pulmonary artery, which carries deoxygenated blood from the heart to the lungs, arteries carry oxygenated blood from the heart to the tissues. The largest arterial trunk is the aortaaorta
, primary artery of the circulatory system 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 heart.
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, branches of which divide and subdivide into ever-smaller tubes, or arterioles, until they terminate as minute capillariescapillary
, microscopic blood vessel, smallest unit of the circulatory system. Capillaries form a network of tiny tubes throughout the body, connecting arterioles (smallest arteries) and venules (smallest veins).
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, the latter connecting with the veinsvein,
blood vessel that returns blood to the heart. Except for the pulmonary vein, which carries oxygenated blood from the lungs to the heart, veins carry deoxygenated blood. The oxygen-depleted blood passes from the capillaries to the venules (small veins).
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 (see 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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). Other important arteries are the subclavian and brachial arteries of the shoulder and arm, the carotid arteries that lead to the head, the coronary arteries that nourish the heart itself, and the iliac and femoral arteries of the abdomen and lower extremities. The walls of the large arteries have three layers: a tough elastic outer coat, a layer of muscular tissue, and a smooth, thin inner coat. Arterial walls expand and contract with each heartbeat, pumping blood throughout the body. The pulsating movement of blood, or pulsepulse,
alternate expansion and contraction of artery walls as heart action varies blood volume within the arteries. Artery walls are elastic. Hence they become distended by increased blood volume during systole, or contraction of the heart.
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, may be felt where the large arteries lie near the body surface.

artery

[′ärd·ə·rē]
(anatomy)
A vascular tube that carries blood away from the heart.

artery

any of the tubular thick-walled muscular vessels that convey oxygenated blood from the heart to various parts of the body
References in periodicals archive ?
Conclusion: The mean diameter and mean length were found to be significantly different between right and left main renal artery and between males and females.
In one kidney (right) the upper renal artery (L1 level) passed posterior to IVC to enter through upper part of hilum, while the lower renal artery (L3 level) crossed anterior to IVC, right pelvi-uretric junction and entered through lower part of hilum.
It was determined that the diameter of the right carotid artery (3.
the ulnar artery joined with the large first dorsal interosseal artery to form the SPA and supplied thumb and index finger in 8% of cases among 86 dissected cadaveric specimens, [sup][3] whereas in our case, it does not supply the index finger.
In the typical course, the ulnar artery crosses deep to the median nerve and is separated from it by the ulnar head of the pronator teres muscle.
After ligation of the splenic artery and left gastric artery, the cadavers were injected with red synthetic latex via the common hepatic artery, and dissected 7 days later.
At the level of the last axial cross-section of the initial cardiac acquisition, just below the emerging of superior mesenteric artery (SMA), we saw an important parietal thrombosis of the abdominal aorta.
Left vertebral artery, originated directly from arch of aorta between the left common carotid artery and left subclavian artery in one cadaver.
Usually each kidney receives one bilateral renal artery with about 6-8mm diameter, but this measure varies according to kidney volume.
Anomalous origin of the left coronary artery from the pulmonary artery is a significant condition which is observed rarely, but which may lead to myocardial ischemia, myocardial infaction and sudden death in childhood.
2003) indicated that in 71% of a sample of 91 corpses the labial arteries originated from independent locations from the facial artery with an average distance of 30.