Question
What is nerve impulse? Distinguish between membrane and action potential.
Answer :
Word Count : 270
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A nerve impulse is an electrical signal that is transmitted along the membrane of a neuron, allowing communication between different parts of the nervous system. It arises due to rapid changes in the distribution of ions across the neuronal membrane, primarily sodium (Na⁺) and potassium (K⁺) ions, which are regulated by ion channels and the sodium-potassium pump. When a stimulus reaches a neuron, it causes depolarization of the membrane, initiating a wave of electrical activity that propagates along
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