An agonist is a chemical that
- A
Increases the rate of reuptake at the synapse
- Bcheck_circle
Mimics or enhances a neurotransmitter's effect
- C
Damages receptors on the postsynaptic neuron
- D
Blocks or inhibits a neurotransmitter's effect
Explanation
Antagonists block; agonists mimic. Morphine is an opioid agonist; naloxone is an antagonist.