Coronary Circulation

Coronary circulation is the circulation of blood in the blood vessels of the heart muscle (myocardium). The vessels that deliver oxygen-rich blood to the myocardium are known as coronary arteries. The vessels that remove the deoxygenated blood from the heart muscle are known as cardiac veins. These include the great cardiac vein, the middle cardiac vein, the small cardiac vein and the anterior cardiac veins.

The coronary arteries that run on the surface of the heart are called epicardial coronary arteries. These arteries, when healthy, are capable of autoregulation to maintain coronary blood flow at levels appropriate to the needs of the heart muscle. These relatively narrow vessels are commonly affected by atherosclerosis and can become blocked, causing angina or a heart attack. (See also: circulatory system.) The coronary arteries that run deep within the myocardium are referred to as subendocardial.

The coronary arteries are classified as "end circulation", since they represent the only source of blood supply to the myocardium: there is very little redundant blood supply, which is why blockage of these vessels can be so critical.

Read more about Coronary Circulation:  Coronary Anatomy, Blood Supply of The Papillary Muscles., Coronary Flow, Anastomoses

Other articles related to "coronary circulation, coronary, circulation":

Coronary Circulation - Anastomoses
... There are some anastomoses between branches of the two coronary arteries ... However the coronary arteries are functionally end arteries and so these meetings are referred to as anatomical anastamoses, which lack function, as opposed to functional or physiological ... This is as blockage of one coronary artery generally results in death of the heart tissue due to lack of sufficient blood supply from the other branch ...
Coronary Circulatory Autoregulation
... fatty acids (and to a smaller extent, glucose very little lactate), the coronary circulation is auto regulated so that the heart receives the right flow of blood hence sufficient supply of oxygen ... If a sufficient flow of oxygen is met and the resistance in the coronary circulation rises (perhaps due to vasoconstriction), then the coronary perfusion pressure (CPP) increases proportionally, to maintain ... In this way, the same flow through the coronary circulation is maintained over a range of pressures ...
Cardiology - Disorders - Disorders of The Coronary Circulation
... This circulation of blood is called the coronary circulation ... The coronary circulation consists of coronary arteries and coronary veins ... Disorders of the coronary circulation can have devastating effects to the heart since damage to the heart can reduce coronary circulation which causes further damage ...

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