Chapter 4

IPSPs are a. inhibitory. b. graded. c. all-or-none. d. all of the above e. both a and b

Which of the following ions triggers exocytosis by its influx into terminal buttons? a. \(C l^{-}\) b. \(\mathrm{Ca}^{2+}\) c. glutamate d. glycine e. \(\mathrm{Na}^{+}\)

Which of the following is the most common mechanism of deactivating neurotransmitter molecules in synapses? a. enzymatic degradation b. acetylcholinesterase c. reuptake by transporters d. all of the above e. both a and b

All of the following are monoamine neurotransmitters except a. epinephrine. b. serotonin. c. norepinephrine. d. dopamine. e. acetylcholine.

Botox is a a. nicotinic agonist b. nicotinic antagonist. c. cholinergic agonist. d. cholinergic antagonist. e. poison used by some South American natives on their darts.