Vagal stimulation causes bradycardia, which can be blocked by
Correct Answer: atropine
Description: Bradycardia due to vagal stimulation is elicited by activation of muscarinic receptor in the heart. Atropine, which is an antagonist at M receptors, blocks bradycardia elicited by stimulation of the vagus, including reflex bradycardia due to increases in mean BP caused by vasoconstrictors.
Category:
Pharmacology
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