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-BARSIC- [3]
4 years ago
5

What process must occur for a muscle to be able to relax?

Biology
1 answer:
Xelga [282]4 years ago
4 0

B.  

Relaxation Phase

Cholinesterase released and acetylcholine breakdown

Sarcolemma & T-tubules repolarized

SR Ca++ pump activated & Ca++ returned to SR terminal cisternae

Actin-myosin crossbridge formation terminated

Return of tropomyosin to actin binding site

Mg++ complex formed with ATP

Passive sliding of filaments

Sarcomeres return to resting state

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