News tagged with heart muscle

Related topics: heart · heart failure · heart attack · stem cells · heart disease

How oxidizing a heart 'brake' causes heart damage

Oxidative stress has been long known to fuel disease, but how exactly it damages various organs has been challenging to sort out. Now scientists from Johns Hopkins say research in mice reveals why oxidation comes to be so ...

May 04, 2015
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Study uncovers foundations of heart regeneration

While the human heart can't heal itself, the zebrafish heart can easily replace cells lost by damage or disease. Now, researchers have discovered properties of a mysterious outer layer of the heart known as the epicardium ...

May 04, 2015
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Resolvin D1 reduces post-heart-attack heart failure

Chronic inflammation provokes a downward spiral in many diseases, including congestive heart failure, atherosclerosis and peripheral artery disease. A University of Alabama at Birmingham-led research team has now found that ...

Apr 29, 2015
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Saturated fatty acids might directly damage heart

Olive oil is universally considered a much healthier alternative to meat fat. Plant-derived oils (such as olive oil, canola oil, and vegetable oil) largely consist of unsaturated fatty acids, whereas animal fat is richer ...

Apr 27, 2015
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Cardiac muscle

Cardiac muscle is a type of involuntary striated muscle found in the walls of the heart, specifically the myocardium. Cardiac muscle cells are known as cardiac myocytes (or cardiomyocytes). Cardiac muscle is one of three major types of muscle, the others being skeletal and smooth muscle. The cells that comprise cardiac muscle are sometimes seen as intermediate between these two other types in terms of appearance, structure, metabolism, excitation-coupling and mechanism of contraction. Cardiac muscle shares similarities with skeletal muscle with regard to its striated appearance and contraction, with both differing significantly from smooth muscle cells.

Coordinated contraction of cardiac muscle cells in the heart propel blood from the atria and ventricles to the blood vessels of the circulatory system. Cardiac muscle cells, like all tissues in the body, rely on an ample blood supply to deliver oxygen and nutrients and to remove waste products such as carbon dioxide. The coronary arteries fulfill this function.

This text uses material from Wikipedia, licensed under CC BY-SA

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