PHYSIOLOGY
NEUROTRANSMISSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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As potassium gates open, the transmembrane potential changes rapidly as positive charges leave the neuron. In fact, an over abundance of potassium flows out to cause hyper-repolarization. At this time, another action potential cannot occur.
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -The flow of potassium ions out of the cell results in a decrease in membrane potential towards the cell’s resting voltage.
Detailed explanation-2: -During repolarization, potassium ions move out of the cell via potassium channels. This movement is down the concentration gradient to restore the charges across the cell membrane.
Detailed explanation-3: -Depolarization is a positive change and hyperpolarization is a negative change.
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