News tagged with muscle cells

Related topics: cells · genes · muscle · stem cells · nerve cells

How oxidizing a heart 'brake' causes heart damage

Oxidative stress has been long known to fuel disease, but how exactly it damages various organs has been challenging to sort out. Now scientists from Johns Hopkins say research in mice reveals why oxidation comes to be so ...

May 04, 2015
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Study uncovers foundations of heart regeneration

While the human heart can't heal itself, the zebrafish heart can easily replace cells lost by damage or disease. Now, researchers have discovered properties of a mysterious outer layer of the heart known as the epicardium ...

May 04, 2015
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Resolvin D1 reduces post-heart-attack heart failure

Chronic inflammation provokes a downward spiral in many diseases, including congestive heart failure, atherosclerosis and peripheral artery disease. A University of Alabama at Birmingham-led research team has now found that ...

Apr 29, 2015
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Saturated fatty acids might directly damage heart

Olive oil is universally considered a much healthier alternative to meat fat. Plant-derived oils (such as olive oil, canola oil, and vegetable oil) largely consist of unsaturated fatty acids, whereas animal fat is richer ...

Apr 27, 2015
popularity9 comments 1

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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