Multiple choice

A nerve impulse leaves a neuron through __________.

  1. nucleus

  2. axon

  3. cyton

  4. dendrite
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A nerve impulse (action potential) travels along the neuron and leaves through the axon, which is the long fiber-like extension that conducts electrical signals away from the cell body. The axon terminal is where neurotransmitters are released to pass the signal to the next neuron. Dendrites receive signals, and the cyton contains the nucleus.

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