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Calcium channel blocker: Quiz


Question 1: Unlike β-blockers, calcium channel blockers do not decrease the responsiveness of the heart to input from the ________.
Sympathetic nervous systemParasympathetic nervous systemAutonomic nervous systemNerve

Question 2: This decreases intracellular calcium leading to a reduction in ________.
Cardiac muscleSmooth muscleMuscular systemMuscle contraction

Question 3: This can help ameliorate symptoms of ischemic heart disease such as ________.
AtherosclerosisMyocardial infarctionAngina pectorisCoronary artery disease

Question 4: Titration of a ________ to a desired heart rate is decidedly easier than titration of a non dihydropyridine CCB.
Beta blockerGuanethidineAntianginalClonidine

Question 5: The main clinical usage of calcium channel blockers is to decrease ________.
Renin-angiotensin systemBlood pressureVasodilationCirculatory system

Question 6: Many calcium channel blockers also slow down the conduction of electrical activity within the heart, by blocking the calcium channel during the plateau phase of the ________ of the heart (see: cardiac action potential).
NeuronPhotoreceptor cellAction potentialIon channel

Question 7: In blood vessels, a decrease in calcium results in less contraction of the vascular smooth muscle and therefore an increase in arterial diameter (CCB's do not work on venous smooth muscle), a phenomenon called ________.
Beta blockerVasodilationAntianginalCalcium channel blocker

Question 8: Most calcium channel blockers decrease the force of contraction of the ________ (muscle of the heart).
Extrafusal muscle fiberSkeletal muscleCardiac muscleSmooth muscle

Question 9: This results in a negative chronotropic effect resulting in a lowering of the ________ and the potential for heart block.
PulseHeart rateBlood pressureCirculatory system

Question 10: Other classes of pharmaceutical agents that have overlapping effects as calcium channel blockers include ________, beta-blockers, and nitrates.
Antihypertensive drugACE inhibitorAngiotensin II receptor antagonistRenin inhibitor

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