Atropine Sulfate When Applied to the Frog Heart Will _

Question

Atropine sulfate when applied to the frog heart will _ .
A) slow down heart rate
B) increase heart rate
C) not affect the heart rate

Accepted Answer

Atropine sulfate is an anticholinergic drug that blocks the action of the parasympathetic nervous system. When applied to the frog heart, it inhibits the action of acetylcholine, a neurotransmitter that normally slows heart rate. Therefore, atropine sulfate increases heart rate by preventing acetylcholine from exerting its effect.