four main functions of muscles
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uses all three types
blood circulation
smooth muscle
food digestion
movement
locomotion, blood circulation, food digestion
four main functions
movement, maintenance of posture, heat production, joint stability
heat production
muscle contractions produce heat due to its inefficiency about 70% of all energy produced by muscles is heat
joint stability
muscle tone is the most important aspect, helps to stabilize articulations, guides and stabilizes movements of joints
posture maintenance
on-going skeletal muscle contractions of postural muscles. helps hold body in stationary positions.