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- Subject
- Pharmacologymedical-mcqs › pharmacology
- Published
- 14 Jan 2023
- Last updated
- 28 May 2026
Explanation
Option A is correct because potassium channel openers decrease calcium influx across smooth muscle membranes, resulting in sustained muscle relaxation. This effect also reduces cardiac contractility. Options B, C, and D describe effects that are either less prominent or inaccurate in relation to potassium channel openers.
More Pharmacology MCQs
Practice related questions from the same subject.
- 1.For which condition is aminocaproic acid primarily prescribed?
- 2.Identify the category of drugs that primarily undergo microsomal oxidation during metabolism:
- 3.Which characteristic best describes the sublingual route of drug administration?
- 4.Which medication lowers blood pressure by targeting the vasomotor centers within the central nervous system?
- 5.Why is Indomethacin generally favored over Colchicine for treating an acute gout flare?
- 6.Which medication, when used long-term for seizure management, is known to cause facial coarsening, excessive hair growth, gum enlargement, and bone softening?
- 7.Which of the following drugs is frequently associated with cardiac toxicity as a side effect?
- 8.Which of the following actions is unique to Aspirin among similar drugs?