Final answer:
The autonomic nervous system is divided into the sympathetic and parasympathetic divisions. The sympathetic division is responsible for the fight-or-flight response, while the parasympathetic division is active during restful periods.
Step-by-step explanation:
The autonomic nervous system is divided into two main divisions: the sympathetic and the parasympathetic divisions. These two divisions control the same organs and glands but in opposite ways. The sympathetic division is responsible for the fight-or-flight response during stressful situations, while the parasympathetic division is active during restful periods.