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lbvjy [14]
2 years ago
14

Calcium mechanism in muscle contraction

Biology
1 answer:
tino4ka555 [31]2 years ago
4 0

 and is prevented in the absence of , which causes calcium to trigger contraction through a response with regulatory proteins.

and filaments of the fibrils glide into one another as a result of calcium diffusing in the cytoplasm, resulting in the of the complete muscle fiber. The SERCAs pump (Sarcoplasmic/endoplasmic reticulum calcium ATPase) actively pumps ions back into the sarcoplasmic reticulum when the action potential decays.

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