Which of the following is a calcium channel blocker?

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Prepare for the Rasmussen Pharmacology Exam 3. This quiz includes multiple-choice questions with hints and explanations. Review essential pharmacological concepts and get ready for your exam!

Multiple Choice

Which of the following is a calcium channel blocker?

Explanation:
Calcium channel blockers prevent calcium from entering cells through L-type calcium channels in vascular smooth muscle and sometimes the heart, which relaxes the vessels and lowers blood pressure. Amlodipine is a dihydropyridine calcium channel blocker that mainly dilates peripheral arteries, reducing systemic vascular resistance and BP. The other drugs act through different mechanisms: lisinopril is an ACE inhibitor that decreases angiotensin II formation; hydrochlorothiazide is a thiazide diuretic that lowers blood volume and resistance; losartan is an ARB that blocks the angiotensin II receptor. Therefore, amlodipine is the calcium channel blocker in this set.

Calcium channel blockers prevent calcium from entering cells through L-type calcium channels in vascular smooth muscle and sometimes the heart, which relaxes the vessels and lowers blood pressure. Amlodipine is a dihydropyridine calcium channel blocker that mainly dilates peripheral arteries, reducing systemic vascular resistance and BP. The other drugs act through different mechanisms: lisinopril is an ACE inhibitor that decreases angiotensin II formation; hydrochlorothiazide is a thiazide diuretic that lowers blood volume and resistance; losartan is an ARB that blocks the angiotensin II receptor. Therefore, amlodipine is the calcium channel blocker in this set.

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