News tagged with heart muscle

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

Root of cardiac fibrosis defined

Northwestern Medicine scientists have identified a novel molecular mechanism that regulates scar formation in the heart, a common manifestation of aging and nearly every form of heart disease. The discovery was published ...

Jul 13, 2017
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Stem cells: the future of medicine

Imagine being able to take cells from your skin, transform them into other types of cells, such as lung, brain, heart or muscle cells, and use those to cure your ailments, from diabetes to heart disease or macular degeneration. ...

Jun 23, 2017
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Patching up a broken heart

It is almost impossible for an injured heart to fully mend itself. Within minutes of being deprived of oxygen – as happens during a heart attack when arteries to the heart are blocked – the heart's muscle cells start ...

Jun 19, 2017
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Broken hearts don't self-heal

A condition once thought to temporarily cause heart failure in people who experience severe stress might actually cause longer-lasting damage to the heart muscle.

Jun 16, 2017
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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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