When Jenny saw that a large barking dog was enclosed by a very high fence,her racing heartbeat began to slow.The slowing of her heartbeat was most directly regulated by her
A) hypothalamus.
B) parasympathetic nervous system.
C) somatic nervous system.
D) sympathetic nervous system.

Question

Quizplus · Accepted Answer

The parasympathetic nervous system is responsible for calming the body down and slowing down bodily functions after a stressful or frightening situation. It directly regulates the heart rate to slow it down.

When Jenny Saw That a Large Barking Dog Was Enclosed