PATHOLOGY MCQ
NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A sudden change in the polarity of the membrane of a neuron, gland cell, or muscle fiber that causes the transmission of electrical impulses
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Action potential
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Membrane potential
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Resting potential
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Threshold
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Explanation:
Detailed explanation-1: -Action Potential. A nerve impulse is a sudden reversal of the electrical gradient across the plasma membrane of a resting neuron. The reversal of charge is called an action potential .
Detailed explanation-2: -Transmission of a signal within a neuron (from dendrite to axon terminal) is carried by a brief reversal of the resting membrane potential called an action potential.
Detailed explanation-3: -Depolarization is the removal of polarity by a process or action. It might also be used to describe how such activity leads to an unpolarized situation as the outcome. Depolarization takes place in a live cell, such as a nerve cell, in biology.
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