Which division of the autonomic nervous system promotes rest-and-digest functions and conserves energy?

Which division of the autonomic nervous system promotes rest-and-digest functions and conserves energy?

• A. Parasympathetic Nervous System
• B. Sympathetic Nervous System
• C. Autonomic Nervous System
• D. Somatic Nervous System

Answer: (A)

The parasympathetic division of the autonomic nervous system is responsible for rest-and-digest and energy conservation. It promotes calming activities: slowing the heart rate, increasing digestive processes, and facilitating tissue repair and energy storage. This contrasts with the sympathetic division, which prepares the body for action (fight-or-flight), and with the somatic nervous system, which controls voluntary muscles. Since the question asks which division promotes rest and energy conservation, the parasympathetic nervous system is the best fit.

The parasympathetic division of the autonomic nervous system is responsible for rest-and-digest and energy conservation. It promotes calming activities: slowing the heart rate, increasing digestive processes, and facilitating tissue repair and energy storage. This contrasts with the sympathetic division, which prepares the body for action (fight-or-flight), and with the somatic nervous system, which controls voluntary muscles. Since the question asks which division promotes rest and energy conservation, the parasympathetic nervous system is the best fit.