In a classic experiment,Otto Loewi electrically stimulated the vagus nerve of a frog heart.He then took the fluid bathing the stimulated heart and applied it to a second frog heart.The beating rate of both hearts slowed down with this treatment.Based on this response,you can assume the nerve he stimulated was part of the
A)parasympathetic system.
B)sympathetic system.
C)somatic system.
D)atrioventricular system.
E)central nervous system.

Question

Quizplus · Accepted Answer

The parasympathetic system is responsible for slowing down bodily functions and the vagus nerve is a part of this system. Loewi's experiment showed a decrease in heart rate, which is a parasympathetic response. Therefore, the nerve he stimulated was part of the parasympathetic system.

In a Classic Experiment,Otto Loewi Electrically Stimulated the Vagus Nerve