A patient tells the nurse, "I prefer to treat my physical problems with herbs and vitamins.

Correct Answer: C

Rationale: The correct answer is C because it acknowledges the patient's preference for natural remedies and emphasizes the empowerment and control aspect of using such treatments. This response validates the patient's choice and promotes a patient-centered approach to care. Choice A is incorrect because it makes a generalization about the safety of natural substances without addressing the patient's specific preference. Choice B is incorrect as it focuses solely on the safety aspect without considering the patient's desire for control. Choice D is incorrect as it discusses the marketing aspect of natural products, which is not relevant to addressing the patient's preference for herbs and vitamins.

Correct Answer: D

Rationale: The correct answer is D: The Wernicke's area. The Wernicke's area, located in the temporal lobe, is responsible for language comprehension. A stroke affecting this area can lead to difficulty in understanding speech. The Broca's area (choice A) is responsible for speech production, not comprehension. The Basal ganglia (choice B) is involved in movement control, not language. The Limbic system (choice C) is related to emotions and memory, not language processing. Therefore, the correct answer is D as the patient's difficulty in speech comprehension indicates damage to the Wernicke's area.

Correct Answer: C

Rationale: The correct answer is C: Dendrites. Dendrites are the part of the neuron that receives signals from other neurons. They contain receptors that can detect neurotransmitters released by neighboring neurons. The signal is then transmitted through the cell body (soma) and along the axon to the axon terminals for further communication. Incorrect choices: A: Axon - The axon is responsible for transmitting the signal away from the cell body. B: Axon Terminal - The axon terminal releases neurotransmitters to communicate with the next neuron. D: Soma - The soma (cell body) integrates incoming signals but does not directly receive the signal from other neurons.

Correct Answer: D

Rationale: The correct answer is D because an antagonist drug binds to postsynaptic receptors and blocks the normal action of the neurotransmitter. By blocking these receptors, the antagonist prevents the neurotransmitter from exerting its effects, effectively inhibiting its action. This results in a decrease or inhibition of the physiological response that would typically occur. Choices A, B, and C are incorrect because: A: This describes an agonist drug, not an antagonist, as it mimics the effect of the neurotransmitter. B: This describes a drug that blocks auto receptor function, not an antagonist drug. C: This describes a drug that increases neurotransmitter synthesis, which is not related to the mechanism of action of an antagonist drug.

Correct Answer: D

Rationale: Carbamazepine is an enzyme inducer, specifically of CYP3A4 and CYP2C enzymes. It increases the metabolism of drugs metabolized by these enzymes, leading to decreased drug levels and potential therapeutic failure. Quinidine, Ketoconazole, and Amiodarone are not enzyme inducers, but rather enzyme inhibitors, which can increase drug levels and lead to toxicity.