Related topics: heart attack
Coronary circulation
hideCoronary circulation is the circulation of blood in the blood vessels of the heart muscle. Although blood fills the chambers of the heart, the muscle tissue of the heart (the myocardium) is so thick that it requires coronary blood vessels to deliver blood deep into it. 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 coronary 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.
For more information about Coronary circulation, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with coronary artery
Easter Island compound extends lifespan of old mice
Jul 08, 2009 |
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The giant monoliths of Easter Island are worn, but they have endured for centuries. New research suggests that a compound first discovered in the soil of the South Pacific island might help us stand the test ...
Scientists program blood stem cells to become vision cells
Jul 31, 2009 |
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University of Florida researchers were able to program bone marrow stem cells to repair damaged retinas in mice, suggesting a potential treatment for one of the most common causes of vision loss in older people.
High-normal phosphate levels linked to early atherosclerosis
Nov 13, 2008 |
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Healthy adults with higher levels of phosphate in the blood are more likely to have increased levels of calcium in the coronary arteries—a key indicator of atherosclerosis and future cardiovascular disease risk, reports a ...
Silver nanoparticles show 'immense potential' in prevention of blood clots
Nanotechnology / Bio & Medicine
May 27, 2009 |
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Scientists are reporting discovery of a potential new alternative to aspirin, ReoPro, and other anti-platelet agents used widely to prevent blood clots in coronary artery disease, heart attack and stroke. ...
New study links vitamin D deficiency to cardiovascular disease and death
Nov 16, 2009 |
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While mothers have known that feeding their kids milk builds strong bones, a new study by researchers at the Heart Institute at Intermountain Medical Center in Salt Lake City suggests that Vitamin D contributes to a strong ...
Skipping sleep may signal problems for coronary arteries
Dec 23, 2008 |
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One extra hour of sleep per night appears to decrease the risk of coronary artery calcification, an early step down the path to cardiovascular disease, a research team based at the University of Chicago Medical Center reports ...
Newer cardiac imaging machines effective in detecting coronary artery stenosis
Aug 26, 2008 |
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The first multicenter study of the accuracy of some of the latest cardiac imaging technology found it was 99 percent as effective in ruling out obstructive coronary artery stenosis - or narrowing of these arteries – as the ...
New imaging technology reveals prevalence of 'silent' heart attacks
Apr 21, 2009 |
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So-called "silent" heart attacks may be much more common than previously believed, according to researchers at Duke University Medical Center.
Waist size predictor of heart failure in men and women
Apr 08, 2009 |
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(PhysOrg.com) -- Adding to the growing evidence that a person’s waist size is an important indicator of heart health, a study led by investigators at Beth Israel Deaconess Medical Center (BIDMC) has found ...
Eating fatty fish once a week reduces men's risk of heart failure
Apr 22, 2009 |
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(PhysOrg.com) -- Eating salmon or other fatty fish just once a week helped reduce men’s risk of heart failure, a recent study shows, adding to growing evidence that omega-3 fatty acids are of benefit to cardiac health. Led ...
Still puzzling: Best care for the frail and elderly with coronary artery disease
Jul 19, 2008 |
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A new study from Duke University Medical Center finds that patients treated solely with medications after suffering from chest pain, heart attack or coronary artery disease are more likely to die during the first year following ...
High calcium level in arteries may signal serious heart attack risk
Jul 28, 2009 |
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Researchers may be able to predict future severe cardiac events in patients with known, stable coronary artery disease (CAD) using coronary calcium scoring, according to a study published in the online edition of Radiology.
Vitamin B niacin offers no extra benefit to statin therapy in seniors already diagnosed with CAD
Nov 18, 2009 |
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The routine prescription of extended-release niacin, a B vitamin (1,500 milligrams daily), in combination with traditional cholesterol-lowering therapy offers no extra benefit in correcting arterial narrowing and diminishing ...
Is there long-term brain damage after bypass surgery? More evidence puts the blame on heart disease
Aug 03, 2009 |
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Brain scientists and cardiac surgeons at Johns Hopkins have evidence from 227 heart bypass surgery patients that long-term memory losses and cognitive problems they experience are due to the underlying coronary artery disease ...
Calcium scans may be effective screening tool for heart disease
Sep 30, 2009 |
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A simple, non-invasive test appears to be an effective screening tool for identifying patients with silent heart disease who are at risk for a heart attack or sudden death. Coronary artery calcium scans can be done without ...
