Question

Secretions of neurotransmitters can be regulated by

Answer 1

Nerve impulses pass between neurons through the synapse with the help of neurotransmitters by synaptic knob

Answer 2

Neurotransmitters are released from synaptic vesicles into the synaptic cleft where they are received by neurotransmitter receptors on the target cell.

they are naturally occurring chemical substances in the brain