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.
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News tagged with coronary artery
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 ...
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 ...
Hope for patients with type 2 diabetes
Dec 03, 2009 |
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The outlook for individuals with type 2 diabetes and coronary artery disease is not as grim as originally believed, according to new Saint Louis University research published in Circulation, the Journal of the American He ...
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.
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. ...
Severe asymptomatic heart disease may accompany narrowing in leg arteries
Dec 01, 2009 |
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Results of a randomized, controlled clinical trial presented today at the annual meeting of the Radiological Society of North America (RSNA) reveal that one in five patients with narrowing or blockage in arteries that supply ...
Preventing repeat strokes -- are survivors taking their medicine?
Dec 01, 2009 |
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Since 1999, stroke survivors have been advised to use aspirin, prescription antiplatelet agents, or prescription anticoagulants to help avoid another stroke. Many large surveys of the U.S. population have reported the use ...
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.
New Anti-Clotting Medication Not More Effective than Standard Care; Hint of Other Clinical Benefits
Medicine & Health / Medications
Nov 17, 2009 |
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(PhysOrg.com) -- Two large studies confirmed that an investigational, reversible anti-clotting medication failed to show greater effectiveness than clopidogrel or a placebo for patients undergoing a procedure to open blocked ...
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 ...
Small increases in phosphorus mean higher risk of heart disease
Nov 05, 2009 |
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Higher levels of phosphorus in the blood are linked to increased calcification of the coronary arteries— a key marker of heart disease risk, according to a study in an upcoming issue of Clinical Journal of the American So ...
Single gene defect can cause stroke, other artery diseases
May 01, 2009 |
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For the first time, scientists have discovered a single gene defect that causes thoracic aortic aneurysms and dissections as well as early onset coronary artery disease, ischemic stroke and Moyamoya disease. ...
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 ...
New Test May Predict Heart Disease Events and the Effect of Weight Loss on Insulin Resistance
Nov 17, 2009 |
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(PhysOrg.com) -- Chemical fingerprints produced by the body's normal metabolic processes predict who will suffer cardiovascular events and who will benefit from weight loss by reduction of insulin resistance, according two ...
Childhood health disparities can have life-long health effects
Jun 02, 2009 |
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Research indicates that physical and mental stress in childhood may have life-long adverse health effects and policy initiatives are needed to emphasize the importance of starting health promotion and disease prevention early ...
