Question

the neurotransmitter secreted by sympatic nerve fibres and adrenal medula​

Answer 1

Answer:

The 2 most common neurotransmitters released by neurons of the ANS are acetylcholine and norepinephrine. ... As previously mentioned, the cells of the adrenal medulla are considered modified sympathetic postganglionic neurons. Instead of a neurotransmitter, these cells release hormones into the blood.

Explanation:

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