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 ?
A study reported that this artery originates in equal proportion from LHA and RHA.9 In many studies, segment IV artery is noted to be arising from LHA, while others have reported RHA being the main source artery.
The uterine artery arises from the anterior division of the internal iliac artery and goes antero-medially to the lateral part of uterine cervix below the isthmic part of uterus, where it crosses the ureter superiorly (Figure 4, medial view of right internal iliac artery after dissection).
The anomalous origin of LCX artery and its retro-aortic course is usually considered as one of the benign anomalies of the coronary artery tree in the absence of atherosclerosis (1, 4).
Three broad categories in classifying anomalous origin of coronary artery include anomalous aortic origin, anomalous aortic origin with anomalous proximal course and anomalous origin from the pulmonary artery.
From the distal third of the splenic artery took origin two left gastroepiploic arteries (at 8 and 10 cm, respectively) which participated in the vascularization of the posterior stomach wall and the great omentum.
Caption: In coronary artery bypass surgery (CABG), a surgeon takes a blood vessel from another part of the body--often a vein from the leg--and attaches or grafts it to the heart above and below the blocked portion of the coronary artery.
Results: A significance difference (p=0.001) was seen between mean right renal artery (diameter 6.66 +- 0.39 mm; length 44.69 +- 2.48 mm) and left renal artery (diameter 6.79 +- 0.36; length 35.10 +- 2.86 mm).
The superficial temporal artery bifurcates anterior to the auricle to become two major branches, the frontal and the parietal.
The common carotid arteries and the subclavian artery supply the head, the cervical and pectoral regions, and the wings.
The SPA was formed by the branch of ulnar artery and completed by the first dorsal metacarpal artery of the radial artery.
Right common carotid artery and right subclavian artery were seen originating as the first and second branches of arch, respectively.