Multiple choice

The transmission of nerve impulse is unidirectional because

  1. the nerve fibre is insulated by medullary sheath

  2. the sodium pump starts from cyton and proceeds towards axonal ends

  3. the neurotransmitter is released only at dendrite ends

  4. the neurotransmitter is released only at the axonal ends
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The transmission of nerve impulse is unidirectional because the neurotransmitter is released only at the axonal ends.

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