Beta Blockers Are Effective in Treating Certain Cardiac Arrhythmias Because

question 3

Multiple Choice

Beta blockers are effective in treating certain cardiac arrhythmias because they _____ the excitatory effects of ______ on the heart

• A) increase; acetylcholine
• B) decrease; acetylcholine
• C) increase; catecholamines (epinephrine and norepinephrine)
• D) decrease; catecholamines (epinephrine and norepinephrine)
• E) increase; beta interferons

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