News tagged with heart muscle

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

Inflammation may be key to diabetes, heart disease link

Inflammation may be the reason high blood sugar levels damage blood vessels, raising the possibility that anti-inflammatory medications might someday be used to lower the risk of blood vessel disease in people with diabetes, ...

Sep 11, 2014
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Drug candidate leads to improved endurance

An international group of scientists has shown that a drug candidate designed by scientists from the Florida campus of The Scripps Research Institute (TSRI) significantly increases exercise endurance in animal models.

Jul 14, 2013
popularity 5 / 5 (7) | comments 0 | with audio podcast

Researchers prevent heart failure in mice

(Medical Xpress)—Cardiac stress, for example a heart attack or high blood pressure, frequently leads to pathological heart growth and subsequently to heart failure. Two tiny RNA molecules play a key role ...

Sep 25, 2012
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Missing link in Parkinson's disease found

Researchers at Washington University School of Medicine in St. Louis have described a missing link in understanding how damage to the body's cellular power plants leads to Parkinson's disease and, perhaps ...

Apr 25, 2013
popularity 5 / 5 (6) | comments 0 | with audio podcast

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.

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