PHARMACOLOGY Drug Classes and Mechanisms Review Exam Q & A 2026 (Complete And Verified Study material) (19pages) LEARNEXAMS

1. A patient with chronic heart failure is prescribed a medication that

inhibits the renin-angiotensin-aldosterone system (RAAS). Which drug

class does this medication belong to?

 A. Beta-blockers

 B. Calcium channel blockers

 C. Angiotensin-converting enzyme (ACE) inhibitors

 D. Diuretics

 Answer: C. ACE inhibitors are used in heart failure to reduce the

workload on the heart by causing vasodilation and decreasing blood

volume.

2. Which of the following drug classes is primarily used to prevent clot

formation in patients at risk of thromboembolic events?

 A. Anticoagulants

 B. Antipyretics

 C. Antifungals

 D. Antivirals

 Answer: A. Anticoagulants, such as warfarin and heparin, are used to

inhibit the blood clotting process and prevent thrombosis.

3. A patient with asthma is prescribed a medication that relaxes bronchial

smooth muscle by stimulating beta-2 adrenergic receptors. Which drug

class does this medication belong to?

 A. Corticosteroids

 B. Bronchodilators

 C. Leukotriene modifiers

 D. Mast cell stabilizers

 Answer: B. Bronchodilators, such as albuterol, work by stimulating

beta-2 receptors to dilate the bronchi and improve airflow.

4. Which drug class is used to lower lipid levels by inhibiting HMG-CoA

reductase?

 A. Bile acid sequestrants

 B. Fibric acid derivatives

 C. Statins

 D. Cholesterol absorption inhibitors

 Answer: C. Statins are commonly prescribed to lower cholesterol levels