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nmdcat.online July 7, 2026

The primary neurotransmitter released by the parasympathetic postganglionic neurons is

A. Epinephrine
B. Norepinephrine
C. Acetylcholine
✓
D. Dopamine

📝 Explanation

Acetylcholine (ACh) is the primary neurotransmitter of the parasympathetic nervous system (both pre- and postganglionic), while the sympathetic system predominantly relies on norepinephrine for postganglionic signaling.

📖 Additional Information

  • Epinephrine
  • Norepinephrine
  • Acetylcholine
  • Dopamine

Acetylcholine (ACh) is the primary neurotransmitter of the parasympathetic nervous system (both pre- and postganglionic), while the sympathetic system predominantly relies on norepinephrine for postganglionic signaling.

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