When the drug atropine is used to treat bradycardia, its action is to ________
A) block the movement of calcium to allow the coronary arteries to dilate
B) block acetylcholine receptors in the heart so that the heart rate increases
C) have a negative chronotropic effect
D) lower the cholesterol level
Answer: B
A) This action does not treat bradycardia.
C) This action slows the heart, which is not desirable in bradycardia.
D) The cholesterol level is not related to bradycardia.
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