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Why are calcium ions necessary for skeletal muscle contraction:

barry

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Why are calcium ions necessary for skeletal muscle contraction:

Why are calcium ions necessary for skeletal muscle contraction:
A) calcium increases the action potential transmitted along the sarcolemma
B) calcium releases the inhibition on Z discs
C) calcium triggers the binding of myosin to actin
D) calcium causes ATP binding to actin
E) calcium binds to regulatory proteins on the myosin filaments, changing both their shape and their position on the thick filaments

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