| A | B |
|---|
| addiction | uncontrollable physical and mental need for something |
| desensitization | process by which neurons in the brain break down neurotransmitter receptors in response to a larger amount of neurotransmitter in the synapse than usual |
| tolerance | drug resistance that occurs when cells adapt, requiring larger doses of the drug to produce the same effect |
| sensitization | process by which a neuron adds more receptors to its surface in response to consistently lower amounts of a neurotransmitter in the synapse |
| stimulant | drug that increases the number of impulses that neurons generate |
| depressant | drug that causes fewer signals to be transmitted between neurons |
