parasympathetic nervous system

/ păr′ə-sĭm′pə-thĕt′ĭk /

1. The part of the autonomic nervous system that tends to act in opposition to the sympathetic nervous system, as by slowing down the heartbeat and dilating the blood vessels. It regulates the function of many glands, such as those that produce tears and saliva, and stimulates motility and secretions of the digestive system.
2. Compare sympathetic nervous system

Example Sentences

It activates your parasympathetic nervous system and tells your body to relax and recuperate.

From The Daily Beast