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Biology · PYQ NEET UG 2026

हिन्दी

Muscle contraction is initiated by a signal sent by the central nervous system by the release of _________.

  1. A
    acetyl choline
  2. B
    acetyl coenzyme A
  3. C
    cyclic guanine monophosphate
  4. D
    cyclic adenine monophosphate
View Answer & Solution

Correct answer · Option A

acetyl choline

Explanation

A neural signal reaching the neuromuscular junction releases a neurotransmitter (acetyl choline) which generates an action potential in the sarcolemma.

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