PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What describes the role of acetylcholine in skeletal muscle contraction?
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To open an axon’s synaptic vesicle
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To close an axon’s synaptic vesicle
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To open a motor-end plate channel
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To block a motor-end plate channel
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Explanation:
Detailed explanation-1: -The acetylcholine binds to the nicotinic receptors concentrated on the motor end plate, a specialized area of the muscle fibre’s post-synaptic membrane. This binding causes the nicotinic receptor channels to open and let sodium ions enter the muscle fibre.
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