Juan is reviewing the effects of neurotransmitter imbalances in mental health disorders. A decrease in which neurotransmitter is most commonly associated with depression?
Serotonin.
Histamine.
Glutamate.
Norepinephrine.
The Correct Answer is A
Choice A reason: Reduced serotonin levels are strongly associated with depression, as serotonin regulates mood, sleep, and emotional stability. Many antidepressants, such as SSRIs, work by increasing serotonin availability in the brain, supporting its role in depression.
Choice B reason: Histamine is primarily involved in immune responses, wakefulness, and allergic reactions, not mood regulation. It is not commonly linked to depression, making it an incorrect choice.
Choice C reason: Glutamate is an excitatory neurotransmitter involved in learning and memory. While imbalances may play a role in some psychiatric conditions, it is not the primary neurotransmitter associated with depression.
Choice D reason: Norepinephrine is involved in arousal and stress responses, and its dysregulation can contribute to depression. However, serotonin is more consistently and prominently linked to the pathophysiology of depression, making it the better choice.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Administering 300 mg three times daily equals 900 mg total (300 mg × 3 = 900 mg).
Choice B reason: 300 mg represents only one dose, not the total for 24 hours.
Choice C reason: 1200 mg would be 300 mg four times daily, which is more than prescribed.
Choice D reason: 600 mg equals 300 mg twice daily, not the correct order.
Correct Answer is D
Explanation
Choice A reason: Mysophobia is the fear of germs or contamination, which does not match the client’s fear of leaving home.
Choice B reason: Xenophobia is an intense dislike or fear of strangers or foreigners, unrelated to avoiding outdoor spaces.
Choice C reason: Acrophobia is the fear of heights, not the fear of leaving one’s home.
Choice D reason: Agoraphobia involves anxiety about being in places where escape might be difficult, often resulting in refusal to leave the home without assistance, which fits this scenario.
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