What is neurotransmitter
a chemical substance which is released at the end of a nerve fibre by the arrival of a nerve impulse and, by diffusing across the synapse or junction, effects the transfer of the impulse to another nerve fibre, a muscle fibre, or some other structure.
it is a chemical present in the axonal end of a neuron
A chemical secreted by axon terminals for the passage of the impulse to the next neuron.
Any substance, such as acetylcholine or dopamine, responsible for sending nerve signals across a synapse between two neurons.
The gap between two neuron