Pharmacology · single question
Amlodipine lowers blood pressure primarily by:
Show answer and explanation
Correct answer: A. Blocking L-type calcium channels, causing arterial vasodilation
- A. Correct. Amlodipine is a dihydropyridine calcium-channel blocker that relaxes vascular smooth muscle, producing arterial vasodilation and reduced peripheral resistance.
- B. Beta-blockers act on cardiac beta receptors—different class.
- C. ACE inhibitors block angiotensin conversion—different mechanism.
- D. Loop diuretics act on the kidney, not vascular calcium channels.