What happens when the nerve impulse reaches the axon terminal
Nerve impulses are transmitted through the neurone in the form of nerve impulses, which are electrical signals. Neurones are not physically attached to the receiving cells. There is a gap between two neurones, or between a neurone and an effector, called a synapse
When the nerve impulse reaches the axon terminals, a chemical messenger, neurotransmitter, is released into the synapse, which alters the activity of the receiving cells. Upon release of the neurotransmitter, depending on where a neurone terminates, it can cause a muscle cell to contract, a gland cell to secrete or another neurone to transmit a nerve impulse.