Biology, asked by kandalkarharsh, 3 months ago

C. Role of calcium ions in contraction and
relaxation of muscles.

Answers

Answered by aastha12812

When calcium binds to troponin, the troponin changes shape, removing tropomyosin from the binding sites. The sarcoplasmic reticulum stores calcium ions, which it releases when a muscle cell is stimulated; the calcium ions then enable the cross-bridge muscle contraction cycle.

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