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MUSC: Properties

Properties of muscles

QuestionAnswer
contractility Ability of muscle to shorten, tighten, and contract
automaticity ability of muscle to contract without a nerve supply
excitability ability to receive and respond to stimuli
extensibility ability to be stretched
elasticity ability to resume resting length when stretched
antagonistic muscle pairs When one muscle of the pair contracts, the opposite muscle of the pair relaxes.
contraction tightening of muscle, becomes shorter and thicker
relaxation muscle returns to its original form, longer and thinner
origin attachment of a muscle that remains relatively fixed during muscular contraction
insertion attachment to movable bone
synergistic muscles assists the agonist by stabilizing the origin bone or by positioning the insertion bone during the movement
Created by: jfoote
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