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  4. Action potential in the sarcolemma of muscles is generated by

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Q. Action potential in the sarcolemma of muscles is generated by

Locomotion and Movement

Solution:

A neural signal reaching neuromuscular junction releases a neurotransmitter, i.e. acetylcholine. It generates an action potential in the sarcolemma. This spreads through the muscle fibre and causes the release of calcium ions into the sarcoplasm.