A nurse is developing a plan of care for a patient experiencing expressive aphasia. The nurse incorporates knowledge that the patient most likely has sustained damage to which of the following?
- A. The postcentral gyrus
- B. Broca?s area
- C. Basal ganglia
- D. The hippocampus
Correct Answer: B
Rationale: Expressive aphasia, difficulty producing speech, is associated with damage to Broca?s area in the frontal lobe. The postcentral gyrus processes sensory input, the basal ganglia regulate movement, and the hippocampus is involved in memory, none of which directly cause expressive aphasia.
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The nurse is assessing a patient experiencing anxiety and observes increased sweating and gooseflesh. The nurse understands that these are the result of which substance?
- A. Acetylcholine
- B. Norepinephrine
- C. Serotonin
- D. Histamine
Correct Answer: B
Rationale: Norepinephrine, part of the sympathetic nervous system, triggers physiological responses like sweating and gooseflesh during anxiety (fight-or-flight response). Acetylcholine is parasympathetic, serotonin regulates mood, and histamine is involved in allergic responses.
When describing the various neurotransmitters, which of the following would the nurse identify as the primary cholinergic neurotransmitter?
- A. Dopamine
- B. Acetylcholine
- C. Norepinephrine
- D. Serotonin
Correct Answer: B
Rationale: Acetylcholine is the primary cholinergic neurotransmitter, acting in the parasympathetic nervous system and at neuromuscular junctions. Dopamine, norepinephrine, and serotonin are monoamine neurotransmitters, not cholinergic.
A group of nursing students are reviewing the role of serotonin in psychiatric disorders. The students demonstrate a need for additional study when they identify which disorder as being associated with its dysfunction?
- A. Depression
- B. Obsessive-compulsive disorder
- C. Panic disorder
- D. Schizophrenia
Correct Answer: D
Rationale: Serotonin dysregulation is strongly associated with depression, OCD, and panic disorder. Schizophrenia is primarily linked to dopamine dysregulation, so identifying it as serotonin-related indicates a misunderstanding.
A nurse is reading a journal article about psychoneuroimmunology. Which information would the nurse most likely find? Select all that apply.
- A. Neurotoxin?s role in receptor site damage
- B. Hypothalamic-pituitary-thyroid axis disruption
- C. Static activity of natural killer cells in response to stress
- D. Hypothalamic damage leading to immune dysfunction
- E. Interruption in the typical circadian rhythm cycle
Correct Answer: B,D,E
Rationale: Psychoneuroimmunology studies interactions between the nervous, endocrine, and immune systems. Hypothalamic-pituitary-thyroid axis disruption (B), hypothalamic damage leading to immune dysfunction (D), and circadian rhythm interruptions (E) are relevant, as they link stress and brain function to immune responses. Neurotoxins (A) are less central, and natural killer cells are not static (C) but increase with stress.
The nurse is caring for a patient who has experienced damage to the parietal lobes of the brain. The nurse anticipates that the patient will have difficulty with which of the following?
- A. Perceiving sensory input
- B. Calculating a math problem
- C. Seeing objects in front of him
- D. Speaking fluently
Correct Answer: A
Rationale: The parietal lobes process sensory information, such as touch and spatial awareness. Damage can impair sensory perception. Calculating math problems involves the frontal and parietal lobes but is less specific, seeing objects relates to the occipital lobe, and fluent speech involves Broca?s area.
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