News tagged with muscle

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

Take the (exercise) plunge

(HealthDay)—You can do more than just beat the heat the next time you go to the pool. Whether you swim or do aquatic exercises, working out in water improves strength, flexibility and cardiovascular health.

Aug 01, 2017
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Take to the road on 2 wheels

(HealthDay)—Cycling is a fun fitness option at every age. It's easier on your joints than some other forms of cardio, yet it's just as efficient.

Jul 31, 2017
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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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