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