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Muscle Physiology

The human body contains over 600 muscles, contributing to about 40% of its mass. The main purpose of muscles is to provide movement, to protect the body, to produce body heat and to support the posture of the skeleton. Of those 600 muscles, there are 215 skeletal muscles specifically responsible to work cooperatively to produce force and movement in a joint. Skeletal muscles are voluntary muscles, they are attached to bone by tendons and they are striated. In order for a muscle to produce force or movement, it must contract, which requires the tissue to have several properties; excitability, contractility, extensibility and elasticity. The muscle must be able to respond to stimulus to develop tension to contract; this stimulus is sent to the muscle via the central nervous system. The sliding filament theory of muscle contraction will guide us through the events that cause a muscle to contract. In order to fully understand how the sliding filament theory......

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Approximate Word Count: 1387
Approximate Pages: 6 (250 words per double-spaced page)

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