News tagged with heart muscle

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

Mending broken hearts with cardiomyocyte molds

2.5 billion. That's approximately the number of times the human heart beats in 70 years. And sometimes during the course of its unrelenting contractions and relaxations, the heart muscle can no longer bear the strain.

Mar 13, 2018
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Controlling ceramides could help treat heart disease

Sanford Burnham Prebys Medical Discovery Institute (SBP) researchers have discovered that accumulation of a type of lipid (fat), known as ceramides, plays a crucial role in lipotoxic cardiomyopathy (LCM)—a heart condition ...

Mar 06, 2018
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Unlocking a cell's potential to regenerate the heart

Some organisms have a remarkable capacity for regenerating tissue. If a fish or salamander suffers heart damage, for instance, their cells are able to divide and successfully repair the injured organ. Imagine if you could ...

Mar 01, 2018
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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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