What is the role of the autonomic nervous system (ANS)?

The autonomic nervous system can play a key role in the generation and maintenance of chronic pain and medically unexplained symptoms because it is one of the most influential complex adaptive systems of the mind/brain-body.

The term autonomic means that the system is decentralized. There is no part of the autonomic nervous system that is in charge. The vital signs and function of the organs and organ system are fine-tuned by the autonomic nervous system, which is responsible for constantly adapting the body to environmental changes, both internal and external. While the somatic part of the peripheral nervous system has charge of input (and also the output of controlling muscular function), the autonomic nervous system has output responsibilities in regulating the internal environment of your body.

Associated with vital internal functions, it helps maintain internal balance and stability (homeostasis) by coordinating activities like digestion, respiration, blood circulation, excretion, and hormone secretion. Your autonomic nervous system is always working. Since it operates reflexively and under the radar of consciousness, you are usually unaware of its continuous operation.