MSD Manual

Please confirm that you are not located inside the Russian Federation

honeypot link
Parasympathetic Innervation
Parasympathetic Innervation

    The parasympathetic division is part of the autonomic nervous system—the part of the nervous system that works automatically (autonomously), without a person's conscious effort, to regulate internal body processes.

    The parasympathetic division regulates body process during ordinary situations. Generally, it conserves and restores. For example, it slows the heart rate and decreases blood pressure. It stimulates the digestive tract to process food and eliminate wastes.