What occurs when the signal reaches the terminal end of the neuron? A diagram outlines the procedure, from release of neurotransmitter into the synaptic gap to inhibition of the neurotransmitter after binding to the post synaptic receptors. Define neurotransmitter and discuss the most common one called acetylcholine. Neurotransmitters can be excitatory or inhibitory.
They are released at nerve-nerve junctions and at neuromuscular junctions. They must be inactivated or will cause constant action potential and muscle stimulation. Cholinesterase is the inhibitor of acetylcholine. Agonists can be used to mimic the action of a neurotransmitter.