Which neurotransmitter is released by most postganglionic parasympathetic neurons at their target organs?
Correct answer: A. Acetylcholine
- A. Acetylcholine
- B. Norepinephrine
- C. Dopamine
- D. Serotonin
Explanation
Most postganglionic parasympathetic neurons release acetylcholine at the effector organ. Norepinephrine is released by most postganglionic sympathetic neurons, although important sympathetic exceptions exist.
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About Nervous System and Special Senses
The nervous system covers neurons, neuroglia, nerve impulses, synapses, reflex arcs, and the organization of the central and peripheral nervous systems. It also explains the autonomic divisions and the receptors and pathways for vision, hearing, balance, taste and smell, distinguishing sensory reception from conscious perception.
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