Multiple choice

At the end of axon, the __________ impulse sets off release of some chemicals.

  1. physical

  2. electrical

  3. mechanical

  4. chemical

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

At the axon terminal, an incoming electrical impulse (action potential) triggers the release of chemical neurotransmitters into the synaptic cleft. This conversion from electrical to chemical signal is crucial for passing information between neurons. The electrical impulse travels down the axon and causes vesicles to release neurotransmitters.

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