Hannah is home alone late at night when she hears a loud, frightening noise.Her heart begins pounding, her muscles tense up, and her senses sharpen.Which system is causing Hannah's reaction?

Question

Quizplus · Accepted Answer

The sympathetic nervous system is responsible for the "fight or flight" response in the body when it perceives a threat. This response includes increased heart rate, muscle tension, and heightened senses, which are all symptoms that Hannah is experiencing in response to the loud noise.

Hannah Is Home Alone Late at Night When She Hears