Which autonomic division calms the body and conserves energy?

Which autonomic division calms the body and conserves energy?

• A. Parasympathetic division
• B. Sympathetic division
• C. Enteric division
• D. Somatic nervous system

Answer: (A)

Calming the body and conserving energy is the parasympathetic division of the autonomic nervous system. It promotes rest-and-digest activities: slowing the heart rate, reducing blood pressure, stimulating digestion and nutrient absorption, and enabling energy storage. These actions help the body recover after stress and maintain baseline functions with less energy expenditure. In contrast, the sympathetic division gears the body up for action—raising heart rate and respiration, dilating pupils, and reducing digestion—to prepare for fight or flight. The enteric division handles many gut-specific processes, but it doesn’t orchestrate the whole-body calm of energy conservation. The somatic nervous system governs voluntary movements and sensory input, not autonomic regulation of arousal and rest.

Calming the body and conserving energy is the parasympathetic division of the autonomic nervous system. It promotes rest-and-digest activities: slowing the heart rate, reducing blood pressure, stimulating digestion and nutrient absorption, and enabling energy storage. These actions help the body recover after stress and maintain baseline functions with less energy expenditure. In contrast, the sympathetic division gears the body up for action—raising heart rate and respiration, dilating pupils, and reducing digestion—to prepare for fight or flight. The enteric division handles many gut-specific processes, but it doesn’t orchestrate the whole-body calm of energy conservation. The somatic nervous system governs voluntary movements and sensory input, not autonomic regulation of arousal and rest.