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GK QUESTION#3827

In the nervous system of animals, a chemical process occurring at the dendrite end of a neuron results in the generation of what kind of signal?

  1. AA hormonal secretion
  2. BA muscular movement
  3. CAn electrical impulseCorrect answer
  4. DA digestive reaction
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Answer

C. An electrical impulse

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Explanation

Chemical signals received at a dendrite can change the electrical potential of the neuron's membrane. If sufficient excitation reaches the action-potential initiation zone, an electrical impulse travels along the axon; not every dendritic input triggers an action potential.

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