Piracetam can produce all of the following effects EXCEPT:

Correct Answer: A

Rationale: The correct answer is A: Antipsychotic. Piracetam is a nootropic drug known for its cognitive-enhancing properties, not for its antipsychotic effects. Piracetam is commonly used for improving memory, learning, and concentration. Anticonvulsant (B), Psychometabolic (C), and Antihypoxic (D) effects are well-documented with Piracetam use. Antipsychotic effects are not a recognized pharmacological action of Piracetam.

Correct Answer: D

Rationale: Correct Answer: D Rationale: 1. Methylxanthines (e.g., theophylline) help relax bronchial smooth muscles. 2. M-cholinoblocking agents (e.g., ipratropium) block the action of acetylcholine, reducing bronchoconstriction. 3. Beta2-stimulants (e.g., albuterol) relax bronchial smooth muscles and dilate airways. 4. "All of above" encompasses all three drug groups, covering various mechanisms to manage asthma symptoms effectively.

Correct Answer: B

Rationale: Erythropoietin does not influence leucopoiesis because it specifically stimulates the production of red blood cells (erythropoiesis). Filgrastim (A) increases white blood cell production, Doxorubicin (C) suppresses bone marrow function impacting white blood cell production, and Methotrexate (D) inhibits cell proliferation including white blood cells. Therefore, B is the correct answer as it does not affect leucopoiesis.

Correct Answer: B

Rationale: Step-by-step rationale for why B (Dobutamine) is the correct answer: 1. Dobutamine is a selective beta-1 agonist, primarily targeting β1-adrenergic receptors in the heart. 2. It increases cardiac contractility and heart rate, making it useful in treating heart failure and cardiogenic shock. 3. Digoxin (A) is a cardiac glycoside, Amrinone (C) is a phosphodiesterase inhibitor, and Dopamine (D) acts on multiple receptors. 4. Thus, the specific action of dobutamine on beta-1 receptors distinguishes it as the correct choice.

Correct Answer: C

Rationale: Rationale: Atenolol is a beta-adrenoceptor-blocking drug, specifically a beta-1 selective blocker. It works by reducing the heart rate and blood pressure, making it effective in treating angina. Dipyridamole is a vasodilator, not a beta blocker. Validol is a mild sedative and antispasmodic, not a beta blocker. Alinidine is an antiarrhythmic drug acting on the alpha-2 adrenergic receptors, not a beta blocker. Therefore, Atenolol is the correct choice as it directly targets beta-adrenoceptors to reduce anginal symptoms.