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

Jaedyn Sanders · Accepted Answer

Final Answer : B, Explanation :  The parasympathetic nervous system is responsible for slowing down bodily functions, including the heart rate. In this situation, Jenny's fear response would have activated the sympathetic nervous system initially, causing her heart rate to increase. However, once she realized that the dog was contained and not a threat, her parasympathetic nervous system would kick in, slowing down her heart rate. The hypothalamus and somatic nervous system are not directly involved in regulating heart rate.

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.

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Learning Objectives

Learning Objectives

Related questions

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 herA) hypothalamus.B) parasympathetic nervous system.C) somatic nervous system.D) sympathetic nervous system.

Definitions

Learning Objectives

Learning Objectives

Related questions

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.