Is the function of acetylcholine in the central nervous system to transmit impulses between neurons, prevent an action potential from occurring, slow down the transmission of nerve impulses, or to maintain a resting potential?
Acetylcholine is a neurotransmitter that mainly interacts with receptors at the NMJ in cardiovascular muscle (parasympathetic innervation) and skeletal muscle.
It wouldn't prevent an action potential from occurring, because an action potential is a function of a VGNaC opening, and generally doesn't have much to do with neurotransmitters.
It wouldn't maintain a resting potential, because that is the function of various ion pumps and channels around the neuronal membrane.
It wouldn't directly decrease the rate of action potentials, because that is a function of many other biochemical processes I won't bore you with.
Neurotransmitters are released as a function of synaptic fusion via
Hence, the answer is probably