PHYSIOLOGY
NEUROMUSCULAR JUNCTION TRANSMISSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What must rush into a muscle cell to promote its depolarization?
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potassium ions
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calcium ions
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acetylcholine
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sodium ions
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Explanation:
Detailed explanation-1: -Neurotransmitters such as acetylcholine bind to receptors on the muscle surface and elicit a depolarization by causing sodium/calcium ions to enter through associated channels.
Detailed explanation-2: -The correct answer is (b): Depolarization occurs when sodium ions enter into the muscle fiber cell causing the membrane potential to move towards +30 mV.
Detailed explanation-3: -The correct option is, c. Opening of voltage gat…
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