MUSCLE NERVE CARTILAGE BONE
PERIPHERAL NERVE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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At rest, a neuron has a ____ charge on the inside of the cell and a ____ charge on the outside.
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positive, negative
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negative, positive
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negative, neutral
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positive, neutral
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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: -The relative excess of positive charges outside and negative charges inside the membrane of a nerve cell at rest is maintained because the lipid bilayer acts as a barrier to the diffusion of ions, and give rise to an electrical potential difference, which ranges from about 60 to 70 mV.
Detailed explanation-3: -The resting potential of electrically excitable cells lies in the range of −60 to −95 millivolts (1 millivolt = 0.001 volt), with the inside of the cell negatively charged.
There is 1 question to complete.