Each fifth grader is supposed to play the role of a part of the body for the school play. One of the children says that she is responsible for respiration, digestion, and arousal. You can surmise that she must be playing the role of the

Question

Quizplus · Accepted Answer

The autonomic nervous system is responsible for controlling involuntary body functions, including respiration (breathing), digestion, and arousal (part of the body's fight or flight response), which matches the functions described by the child.  The autonomic nervous system works even when we are asleep, sustaining basic life processes.

Each Fifth Grader Is Supposed to Play the Role of a Part