Question

Is acetylcholine excitatory or inhibitory?

Answer 1

1. Acetylcholine is known to have excitatory actions at neuromuscular junctions, at certain glandular tissues, at autonomic ganglion, and in the central nervous system (often abbreviated to the central nervous system).
2. It is known to have inhibitory actions in the cardiac muscle and at certain smooth muscles.
3. Thus, it is both excitatory and inhibitory in action.