NEET Biology question

BiologyLocomotion and MovementNEET

Arrange the following steps of muscle contraction in the sequence of events occurring first I. Receptor sites on sarcolemma II. Nerve impulse III. Release of Ca2+ IV. Acetylcholine release V. Shortening of sarcomere VI. Synaptic cleft VII. Spread of impulse over sarcolemma on T-tubule The correct option is

Answer: (A)

Solution

Contraction begins with a nerve impulse (II) that releases acetylcholine (IV) into the synaptic cleft (VI), which binds receptor sites on the sarcolemma (I), generating an impulse

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Question ID VK-117050