What is the role of the parasympathetic nervous system?

William B. Salt II., MD

Gastroenterology

The parasympathetic branch of your autonomic nervous system also originates in your spinal cord. Activation of the parasympathetic nervous system causes a general slowdown in your body’s functions to conserve energy. This is the relaxation response. Whatever the sympathetic nervous system dilates or accelerates the parasympathetic nervous system contracts or slows down.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.