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ch 8

types of skeletal muscle contraction

QuestionAnswer
twitch contractions laboratory phenomena/ not normal muscle activity; single contraction of muscle fibers caused by single threshold stimulus
tetanic contractions sustained muscular contractions caused by stimuli hitting a muscle in rapid succession
isotonic contraction produces movement at joint bc muscle changes length
concentric contraction muscle shortens at insertion end of muscle to move toward point of origin
eccentric contraction the muscle lengthens under tension, thus moving insertion away from origin
most types of movements are isotonic contractions
isometric contractions contractions that don't produce movement, muscle doesn't shorten, although it doesn't move muscle tension increases
Created by: b.marshall
 

 



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