EMBRYOLOGY
NERVOUS SYSTEM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The neuron’s resting potential is around how many mV?
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25
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-25
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-70
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-55
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Explanation:
Detailed explanation-1: -A neuron at rest is negatively charged: the inside of a cell is approximately 70 millivolts more negative than the outside (−70 mV, note that this number varies by neuron type and by species).
Detailed explanation-2: -A resting neuron is polarized at a membrane potential of-70mV, with greater negative charge inside. When there is a change in the membrane potential with the inside becoming more positive, the neuron is depolarized.
Detailed explanation-3: -Resting membrane potential of a neuron is about-70mV which means that the inside of the neuron is 70mV less than the outside. There are more k and less NA+ inside and more NA+ and less K+ outside.
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