Rest and digest

The parasympathetic nervous system is one of the divisions of the autonomic nervous system, which is responsible for regulating involuntary bodily functions. The autonomic nervous system has two main branches: the sympathetic nervous system and the parasympathetic nervous system.

The parasympathetic nervous system generally works to promote a "rest and digest" response in the body. It is responsible for conserving energy and promoting activities that occur when the body is at rest. Some of the functions regulated by the parasympathetic nervous system include: