A particular neurotransmitter:
A) always communicates either an excitatory or inhibitory effect.
B) can sometimes have different effects in different areas of the brain.
C) can be located in the central nervous system or the peripheral nervous system, but not in both.
D) can attach to any available receptor site on adjacent neurons.

Question

Quizplus · Accepted Answer

Different areas of the brain may have varying concentrations of receptors for a particular neurotransmitter, leading to different effects. It is also possible for a single neurotransmitter to have both excitatory and inhibitory effects depending on the type of receptor it binds to. A and D are incorrect because a neurotransmitter can have both excitatory and inhibitory effects, and it can only attach to specific receptor sites on adjacent neurons, not any available site. C is also incorrect because a single neurotransmitter can be found in both the central and peripheral nervous systems.

A Particular Neurotransmitter