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Parasympathetic Nervous System
Restores body functions to normal after they have been stimulated by the sympathetic nervous system .
In times of danger, the sympathetic nervous system prepares the body for violent activity. The parasympathetic system reverses these changes when the danger is over.
Rest and digest
The parasympathetic nervous system restores and maintains at a low level.
- Energy.
- Blood pressure.
- Heart rate.
- Breathing rate.
- It also directs blood to the digestive tract to encourage active digestion of food
This is why it is sometimes called the 'rest and digest' system.
Some effects created by parasympathetic nervous system stimulus:
- Slowing down of the heartbeat
- Lowering of blood pressure
- Constriction of the pupils
- Increased blood flow to the skin and viscera
- Peristalsis of the GI tract