Alila Academy

The autonomic nervous system, or ANS, is the part of the nervous system that regulates activities of internal organs. The ANS is largely autonomous, acting independently of the body’s consciousness and voluntary control. It has two main divisions: sympathetic, SNS, and parasympathetic, PSNS.

In situations that require alertness and energy, such as facing danger or doing physical activities, the ANS activates its sympathetic division to mobilize the body for action. This division increases cardiac output, accelerates respiratory rate, releases stored energy, and dilates pupils. At the same time, it also inhibits body processes that are less important in emergencies, such as digestion and urination.

On the other hand, during ordinary situations, the parasympathetic division conserves and restores. It slows heartbeats, decreases respiratory rate, stimulates digestion, removes waste and stores energy. 

Subscribe to one of the courses below to continue!