News tagged with muscle

Related topics: genes · protein · mice · cells · stem cells

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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Researchers find key to muscle regeneration

Saint Louis University researchers report in Molecular Metabolism new findings that the nuclear receptor REV-ERB appears to play a key role in muscle regeneration, suggesting the receptor may be a good target for new drugs ...

Jun 14, 2017
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How reading makes us move

Right now, while you are reading these typewritten words, your hand muscles are moving imperceptibly, but measurably. These movements would be even greater if the words were handwritten.

Jun 13, 2017
popularity105 comments 0

Muscle

Muscle (from Latin musculus, diminutive of mus "mouse") is the contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells. Muscle cells contain contractile filaments that move past each other and change the size of the cell. They are classified as skeletal, cardiac, or smooth muscles. Their function is to produce force and cause motion. Muscles can cause either locomotion of the organism itself or movement of internal organs. Cardiac and smooth muscle contraction occurs without conscious thought and is necessary for survival. Examples are the contraction of the heart and peristalsis which pushes food through the digestive system. Voluntary contraction of the skeletal muscles is used to move the body and can be finely controlled. Examples are movements of the eye, or gross movements like the quadriceps muscle of the thigh. There are two broad types of voluntary muscle fibers: slow twitch and fast twitch. Slow twitch fibers contract for long periods of time but with little force while fast twitch fibers contract quickly and powerfully but fatigue very rapidly.

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

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