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WAEC Biology 2008 Question 17

Question 17

Nervous Coordination

The passage of nerve impulse across a synapse is facilitated by the secretion of

  1. A.acetylcholine
  2. B.thyroxine
  3. C.insulin
  4. D.progesterone.
Show the answer and explanation

Answer: A (acetylcholine)

Explanation

The nerve ending releases acetylcholine, which crosses the synaptic gap and starts an impulse in the next neurone.