Which of the following agents is related to cannabis?

Correct Answer: C

Rationale: Step-by-step rationale: 1. Hashish is a cannabis product made from the resin of the cannabis plant. 2. Cannabis plant contains psychoactive compounds such as THC, which is also present in hashish. 3. Heroin, ecstasy, and crack are not related to cannabis and have different chemical compositions and effects. 4. Therefore, the correct answer is C (Hashish) as it is directly related to cannabis. Summary: - Choice A (Heroin) is incorrect as it is an opioid, not related to cannabis. - Choice B (Ecstasy) is incorrect as it is a synthetic drug, not related to cannabis. - Choice D (Crack) is incorrect as it is a form of cocaine, not related to cannabis. - Only choice C (Hashish) is related to cannabis due to its origin from the cannabis plant and containing similar psychoactive compounds.

Correct Answer: B

Rationale: Step-by-step rationale: 1. Pernicious anemia is caused by a deficiency in vitamin B12. 2. Cyanocobalamin is the synthetic form of vitamin B12 used to treat pernicious anemia. 3. Ferrous lactate, iron dextran, and ferrous gluconate are iron supplements, not vitamin B12. 4. Therefore, the correct answer is B (Cyanocobalamin) as it addresses the underlying cause of pernicious anemia.

Correct Answer: D

Rationale: The correct answer is D because all three drug classes are commonly used in chronic heart failure management. Cardiac glycosides like digoxin improve heart function. Diuretics help manage fluid overload. ACE inhibitors like enalapril improve outcomes by reducing the workload on the heart. Each drug class targets different aspects of heart failure progression, making a combination of these medications beneficial in managing the condition effectively. Therefore, all the above choices are correct in the context of treating chronic heart failure.

Correct Answer: D

Rationale: Step 1: Dipyridamole blocks the reabsorption and breakdown of adenosine, leading to increased endogenous adenosine levels, which causes vasodilatation. Step 2: This vasodilatation results in increased blood flow to the myocardium, counteracting the hypoperfusion caused by stenotic coronary arteries. Step 3: Dipyridamole also inhibits platelet aggregation, which can be beneficial in preventing thrombosis. Step 4: Therefore, all three statements (A, B, and C) are true regarding Dipyridamole, making option D the correct choice.

Correct Answer: D

Rationale: The correct answer is D: Vinpocetine. Vinca minor alkaloids are derived from the plant Vinca minor. Vinpocetine is a synthetic derivative of Vinca minor alkaloids used for its cerebral vasodilator properties. Nicergoline (A) is a different class of drug used for cognitive enhancement. Warfarin (B) is an anticoagulant. Cinnarizine (C) is a calcium channel blocker used for vertigo and motion sickness. Vinpocetine (D) is the correct answer due to its relation to Vinca minor alkaloids and its use as a cerebral vasodilator.