Muscle
hideMuscle (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.
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News tagged with muscle protein
Moderate amounts of protein per meal found best for building muscle
Oct 26, 2009 |
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For thousands of years, people have believed that eating large amounts of protein made it easier to build bigger, stronger muscles. Take Milo of Croton, the winner of five consecutive Olympic wrestling championships in the ...
Insulin boost restores muscle growth in elderly
Sep 25, 2009 |
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When most people think of insulin, they think of diabetes — a disease that arises when, for one reason or another, insulin can't do the critical job of helping the body process sugar. But the hormone has another, less well-known ...
Research shows safe dosages of common pain reliever may help prevent conditions related to aging
Sep 23, 2009 |
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Recent studies conducted by Dr. Eric Blough and his colleagues at Marshall University have shown that use of the common pain reliever acetaminophen may help prevent age-associated muscle loss and other conditions.
Experiments show 'artificial gravity' can prevent muscle loss in space
Jul 22, 2009 |
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When the Apollo 11 crew got back from the moon, 40 years ago this week, they showed no ill effects from seven days spent in weightlessness. But as American astronauts and Soviet cosmonauts began conducting longer-duration ...
Muscular protein bond -- strongest yet found in nature
Jul 20, 2009 |
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A research collaboration between Munich-based biophysicists and a structural biologist in Hamburg (Germany) is helping to explain why our muscles, and those of other animals, don't simply fall apart under stress. Their findings ...
Discovery Links Proteins Necessary to Repair Membranes
Jun 11, 2009 |
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(PhysOrg.com) -- Researchers at UMDNJ-Robert Wood Johnson Medical School are a step closer to treating, and perhaps preventing, muscle damage caused by disease and aging. In their study, published in the June issue of Journal of ...
Researchers develop DNA 'patch' for canine form of muscular dystrophy
Medicine & Health / Neuroscience
Mar 16, 2009 |
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Using a novel genetic technology that covers up genetic errors, researchers funded in part by the National Institutes of Health have developed a successful treatment for dogs with the canine version of Duchenne muscular dystrophy, ...
Why 'lazy Susan' has a weak heart
Mar 05, 2009 |
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When young, apparently healthy athletes suddenly collapse, it can be due to hereditary cardiac disease. Researchers at the Heidelberg University Hospital have now discovered a genetic modification that leads to cardiac weakness ...
