Final answer:
The parasympathetic nervous system is the division of the autonomic nervous system that is often referred to as the rest-and-digest system. It helps the body return to a state of rest after the fight-or-flight response and maintains homeostasis at other times.
Step-by-step explanation:
The division of the autonomic nervous system that is often referred to as the rest-and-digest system is the parasympathetic nervous system. The parasympathetic division is responsible for restful and digestive functions. It helps the body return to a state of rest after the fight-or-flight response and maintains homeostasis at other times.