A psychiatric nurse is preparing nursing staff education on the role of neurotransmitters in neurobiology. Which statement will the nurse include in the teaching presentation?
1. "There are two classes of neurotransmitters."
2. "Each neurotransmitter functions in the same manner."
3. "Neurotransmitters and receptors do not vary in their affinity for each other."
4. "Neurotransmitters consistently act in either an excitatory or inhibitory manner."
Answer: 4
Explanation: Neurotransmitters consistently have either an excitatory or inhibitory effect on the postsynaptic neuron. Each neurotransmitter functions in a unique manner. There are three classes of neurotransmitters. Neurotransmitters and receptors vary in their affinity for each other, depending on the neurotransmitter involved.
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