Indicate the CNC stimulating drug,which belongs to adaptogens:

Correct Answer: B

Rationale: The correct answer is B: Eleuterococci extract. Adaptogens are substances that help the body adapt to stress and promote balance. Eleutherococcus, also known as Siberian ginseng, is a well-known adaptogen commonly used as a stimulant in traditional medicine. Rationale: 1. Eleuterococci extract is a known adaptogen that helps the body cope with stress and fatigue. 2. Amphetamine and Sydnocarb are stimulant drugs but do not belong to the category of adaptogens. 3. Caffeine is a stimulant but does not qualify as a true adaptogen since it does not have the holistic stress-adapting properties of adaptogens. In summary, Eleuterococci extract is the correct choice as it aligns with the definition and properties of adaptogens, while the other choices lack the specific stress-adapting qualities required for adaptogens.

Correct Answer: A

Rationale: Rationale: Sevoflurane decreases the ventilatory response to hypoxia by depressing the central nervous system. It inhibits the brain's response to low oxygen levels, leading to decreased breathing effort. Nitrous oxide, desflurane, and halothane do not have the same effect on the ventilatory response to hypoxia. Nitrous oxide actually stimulates the ventilatory response, while desflurane and halothane may have minimal effects or slightly increase the response. Thus, Sevoflurane is the correct choice as it specifically decreases the ventilatory response to hypoxia.

Correct Answer: B

Rationale: The correct answer is B: Sucralfate. Sucralfate forms a physical barrier by binding to the ulcer site, protecting it from stomach acid and pepsin. Ranitidine (A) and Omeprazole (C) are both acid-reducing drugs that work by inhibiting acid production. Pirenzepine (D) is a muscarinic receptor antagonist that decreases acid secretion but does not form a physical barrier. Therefore, Sucralfate is the correct choice for forming a physical barrier to HCl and pepsin.

Correct Answer: B

Rationale: The correct answer is B because aspirin inhibits cyclooxygenase (COX) enzyme, which is responsible for thromboxane synthesis. Thromboxane promotes platelet aggregation and vasoconstriction. By inhibiting thromboxane synthesis, aspirin reduces platelet aggregation, making it an effective antiplatelet agent. Choice A is incorrect because plasminogen is not involved in the mechanism of aspirin action. Choice C is incorrect because it describes the mechanism of heparin, not aspirin. Choice D is incorrect because inhibiting the glycoprotein IIb/IIIa complex is the mechanism of action of drugs like abciximab, not aspirin.

Correct Answer: B

Rationale: Verapamil is a calcium channel blocker that primarily acts on the heart and has limited vasodilatory effects. Nifedipine, on the other hand, is a potent vasodilator that primarily acts on blood vessels. Therefore, the statement that verapamil is a more potent vasodilator than nifedipine is FALSE. Other choices (A, C, D) are incorrect because verapamil is not a more potent vasodilator compared to nifedipine.