Are there only two neurotransmitters in the PNS?

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SUMMARY

The primary neurotransmitters in the peripheral nervous system (PNS) are acetylcholine and norepinephrine. Acetylcholine serves as the main neurotransmitter, while norepinephrine plays a significant role as well. Epinephrine, although often mentioned, is not classified as a neurotransmitter in the PNS; its primary function is as a hormone synthesized in the adrenal gland, with only minor activity in the central nervous system (CNS).

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DrFishNips
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I read that the only 2 neurotrasmitters in the PNS are acetylcholine and norepinephrine. Acetylcholine being the main one. That can't be right can it? What about epinephrine?
 
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DrFishNips said:
I read that the only 2 neurotrasmitters in the PNS are acetylcholine and norepinephrine. Acetylcholine being the main one. That can't be right can it? What about epinephrine?

Epinephrine is not a neurotransmitter in the PNS. Its only activity as a neurotransmitter is a minor one in the CNS. Its primarily synthesized in the adrenal gland and its main systemic activity is as a hormone.
 
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