Does the parasympathetic neuron release epinephrine and norepinephrine as it’s hormone/neurotransmitter?

Expert Solution

No. Epinephrine is the active sympathomimetic hormone from the Adrenal medulla. It stimulates both the alpha- and beta- adrenergic systems, causes systemic vasoconstriction and gastrointestinal relaxation, stimulates the heart, and dilates bronchi and cerebral vessels.

Norepinephrine is a neurotransmitter in the sympathetic nervous system.

The parasympathetic nervous system (PSNS) is one of the two divisions of the autonomic nervous system.

The parasympathetic system is responsible for stimulation of "rest-and-digest" or "feed and breed" activities that occur when the body is at rest, especially after eating, including sexual arousal, salivation, lacrimation, urination, digestion and defecation.

The parasympathetic nervous system uses chiefly acetylcholine (ACh) as its neurotransmitter, although peptides (such as cholecystokinin) can be used. The ACh acts on two types of receptors, the muscarinic and nicotinic cholinergic receptors.

Sydney Mullin answered 1 year ago

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