Q:

Which statement about the neurotransmitter acetylcholine (ACh) is NOT correct?

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Which statement about the neurotransmitter acetylcholine (ACh) is NOT correct?


  1. ACh is released by all autonomic nervous system pre-ganglionic fi bres.
  2. ACh is released by all sympathetic division post-ganglionic fi bres.
  3. ACh is released by all parasympathetic division post-ganglionic fi bres.
  4. ACh is released by all somatic division motor nerve fi bres.

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B: In fact norepinephrine (not ACh) is released by most ANS-SD post- ganglionic fi bres i.e. at 2nd synapse. Choices A, C & D are true. 

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