Final answer:
The autonomic nervous system (ANS) regulates the internal organs of the body and is divided into two main divisions: the sympathetic and parasympathetic nervous systems.
Step-by-step explanation:
The autonomic nervous system (ANS) regulates the internal organs of the body and is divided into two main divisions: the sympathetic and parasympathetic nervous systems. The sympathetic division is responsible for the body's 'fight or flight' response, preparing it for stressful situations. The parasympathetic division is active during restful periods and helps maintain homeostasis. The ANS is part of the peripheral nervous system, which also includes the sensory-somatic nervous system. The sensory-somatic nervous system transmits sensory information from the skin and muscles to the central nervous system (CNS), and motor commands from the CNS to the muscles.