(redirected from Left anterior descending artery)
Also found in: Dictionary, Thesaurus, Medical, Legal.


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.
..... Click the link for more information.
. 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.
..... Click the link for more information.
, 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).
..... Click the link for more information.
, 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).
..... Click the link for more information.
 (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
..... Click the link for more information.
). 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.
..... Click the link for more information.
, may be felt where the large arteries lie near the body surface.


A vascular tube that carries blood away from the heart.


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 ?
Extensive Endarterectomy and reconstruction of the left anterior descending artery early and late outcomes.
[1-3] The most common congenital anomaly is separate origin of the left anterior descending artery and circumflex artery from the left coronary sinus.
The abnormal right coronary artery had multiple collaterals from the left anterior descending artery and left circumflex branch.
Caption: Figure 7: Coronary angiography image showing a spontaneous dissection of the left anterior descending artery of its ostiale and proximal segments.
Iliceto, "Left anterior descending artery myocardial bridging: a clinical approach," Journal of the American College of Cardiology, vol.
In our study, 46.7% with triple vessel involvement and only 19.5% patients were of having left anterior descending artery stenosis.
Despite the presence of firm adhesions at harvesting, LITA flow and caliber were proper, so that this conduit was successfully grafted to left anterior descending artery (LAD).
Sections from the aorta showed grade III atherosclerotic change and the left anterior descending artery was showing grade V atherosclerotic change with 95 % obstruction of lumen.
(3) It is most commonly seen in the right coronary artery (40%), followed by the left anterior descending artery (29%), left circumflex artery (24%) and left main artery (7%).
Within the proximal left anterior descending artery, there was a small focal dilation as well as a more fusi-form dilation located just distally (Figure5).
The left internal mammary artery is the best choice in cardiac surgery to revascularize the left anterior descending artery. In the case of patients with Leriche syndrome, acute ischemia of the lower limbs has been reported when the IMA was used in bypass grafting.

Full browser ?