5 major functions of muscle tissue

structural organization of skeletal muscle tissue

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Movement

Primary function of skeletal muscle in the body is movement

Body heat production

The body maintains a fairly constant temperature *maintains homeostasis*

Posture & support of body

The skeletal system provides a framework for body support but the muscles do all the heavy lifting

Regulating organ volume

sphincters (round bands of smooth muscle) prevent organs from losing everything

Homeostasis in the muscular system

Body heat production - maintains a fairly consistent temperature Muscle metabolism produces heat as an end product Muscle constitutes about 40%-45% of the body's weight - Constant state of Fiber Activity Primary Source of Body Heat Heat rate rises w/ increased muscle activity

Movement of substances within the body

Cardiac muscle contracts and pushes blood throughout the body