Final answer:
The sympathetic division prepares the body for stress, while the parasympathetic division promotes rest and digestion.
Step-by-step explanation:
The autonomic nervous system is responsible for regulating many internal organs and glands. It is divided into two branches: the sympathetic division and the parasympathetic division. The sympathetic division is associated with the 'fight-or-flight' response, preparing the body for stressful situations, while the parasympathetic division is involved in restful periods, allowing the body to return to its normal state. Both divisions have opposite effects on various systems, such as heart rate, digestion, and bladder function.