Biology, asked by gunelkawirinka4272, 11 months ago

Which ion is essential for muscle contraction?
(a) Na⁺(b) K⁺
(c) Ca⁺⁺ (d) Cl⁻

Answers

Answered by Anonymous
1

Answer:

C) calcium

Explanation:

Calcium is so important to the muscularfunction. Upon nervous system excitation for acontraction, calcium is released into the fibre. It binds with troponin and stimulates it to move tropomyosin which exposes the binding site for the myosin cross-bridge.

Answered by Kinggovind021
0

Hey mate!!

Calcium is so important to the muscular function. Upon nervous system excitation for a contraction, calcium is released into the fibre. It binds with troponin and stimulates it to move tropomyosin which exposes the binding site for the myosin cross-bridge. Because of the presence of calcium, the muscle can now contract.

So, the correct answer is 'Ca'.

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