PHYSIOLOGY
NEUROMUSCULAR JUNCTION TRANSMISSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Once the channels are activated, where does Na+ move to?
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Axon terminal
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Acetylcholine receptor site
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The inside of the muscle fiber
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Terminal button
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Explanation:
Detailed explanation-1: -Action potentials are caused when different ions cross the neuron membrane. A stimulus first causes sodium channels to open. Because there are many more sodium ions on the outside, and the inside of the neuron is negative relative to the outside, sodium ions rush into the neuron.
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.
There is 1 question to complete.