MUSCULAR SYSTEM. BY JASON STEVENS. FUNCTION. The muscular system is composed of specialized cells called muscle fibers. Their predominant function is contractibility.
A muscle cramp is a sudden contraction of one or more of your muscles. The result can be intense pain and an inability to use the affected muscles.
When you overdo it physically, you may experience sudden pain and swelling around a joint or a muscle. This may occur when you stretch too far, change direction or slow down abruptly, land awkwardly, or collide with another player during a sporting event.
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