What Is the Difference Between a Beta Blocker and a Calcium-Channel

question 56

Multiple Choice

What is the difference between a beta blocker and a calcium-channel blocker?

• A)Beta-blockers block norepinephrine and epinephrine from binding to beta-adrenoceptors and a calcium channel blocker inhibits the flow of calcium ions into muscles.
• B)Calcium channel blockers block norepinephrine and epinephrine from binding to beta-adrenoceptors and do not relax the heart as beta-blockers do.
• C)Although both slow down and relax the heart, only calcium blockers can block norepinephrine and epinephrine from binding to beta-adrenoceptors.
• D)Although both slow down and relax the heart, only beta-blockers can inhibit the flow of calcium ions into muscles, thereby inhibiting muscle contraction.

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