Axon terminal is the end of an axon. Every axon branches into several fine endings and each tipped by a small swelling called an axon terminal.
The axon terminals contain vesicles filled with neurotransmitters.
When an impulse (action potential) arrives at the axon terminal, it stimulates the movement of the synaptic vesicles towards the membrane where they fuse with the plasma membrane and release their neurotransmitters in the synaptic cleft.
