Describe three ways that drugs affect synapses that use the neurotransmitter dopamine

The three ways in which drugs affect the synapses include; they affect the number of neurotransmitters available, the rate of release of neurotransmitters, and binding affinity of neurotransmitter receptors to the neurotransmitters.  For example; Drugs can affect the production of neurotransmitters, movement of neurotransmitters into vesicles, or movement of vesicles to a synapse.

Diagrams for sure 67(8? ; 4