All of the following drugs stimulate appetite EXCEPT:

Correct Answer: C

Rationale: Fepranone is the correct answer because it is a medication used to suppress appetite, not stimulate it. Vitamins are essential nutrients, bitters can stimulate appetite, and insulin regulates blood sugar but can also stimulate appetite. Therefore, Fepranone is the only drug in the list that does not stimulate appetite.

Correct Answer: B

Rationale: Verapamil is a calcium channel blocker that decreases heart rate by blocking L-type calcium channels in the heart. Choice B, stating it increases heart rate, is incorrect. Verapamil relaxes coronary artery smooth muscle (Choice C) and depresses cardiac contractility (Choice D), making them true statements. So, the correct answer is B as it contradicts the pharmacological effects of verapamil.

Correct Answer: C

Rationale: The correct answer is C: Decreasing of heart work. Beta-blockers reduce blood pressure by decreasing the heart's workload through blocking the effects of adrenaline on the heart, resulting in lowered heart rate and force of contraction. This reduces the amount of blood pumped by the heart, leading to decreased blood pressure. The other choices are incorrect because: A: Peripheral vasodilatation - Beta-blockers actually cause vasoconstriction, not vasodilatation. B: Diminishing of blood volume - Beta-blockers do not directly affect blood volume. D: Depression of vasomotor center - Beta-blockers primarily act on the heart, not the vasomotor center.

Correct Answer: A

Rationale: The correct answer is A: TRUE. The hypothalamus secretes thyrotropin-releasing hormone (TRH) which stimulates the anterior pituitary to release thyroid-stimulating hormone (TSH), which in turn stimulates the thyroid gland to produce thyroid hormones. This demonstrates the hypothalamic control over the thyroid gland. Choices B, C, and D are incorrect because the hypothalamus does indeed play a crucial role in regulating the thyroid gland, making the statement true rather than false, all-encompassing, or none at all.

Correct Answer: D

Rationale: The correct answer is D, "All of the above." Insulin therapy can lead to hypoglycemia due to excessive insulin dosage, insulin allergy in some rare cases, and lipodystrophy at injection sites from repeated injections. Each complication is a potential risk of insulin therapy, making all choices relevant. Therefore, option D is the correct answer as it encompasses all possible complications. Choices A, B, and C individually address specific complications but do not cover the full scope of potential issues associated with insulin therapy, making them incorrect in this context.