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Beginning of Paper
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The musculoskeletal system is made up of bones, joints, and muscles. This system gives the body form and support, and protects the body while allowing it to move. Basically, the muscles in this system perform three important body functions: the movement of body parts, maintenance of body parts, and production of body heat.
These muscles all consist of a mass of protein fibers grouped together, and most are of mesodermal origin. And almost ....
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Middle of Paper
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.... The arrangement of the myosin and actin gives skeletal muscle its striated (or striped) appearance.
Each section of a myofibril is called a sarcomere, and is the functional unit of muscle.
How muscles contract is directly related to their structure. The sliding filament theory is an explanation of how muscle contractions occur. This theory states that the actin filaments within the sarcomere slide toward one another during contraction. But, t ....
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ADDITIONAL FEATURED ESSAYS
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