Which division of the autonomic nervous system arouses the body, mobilizing its energy in stressful situations?

• A. Central nervous system
• B. Sympathetic nervous system
• C. Somatic nervous system
• D. Parasympathetic nervous system

Answer: (B)

In stressful situations, the body switches into a high-alert mode driven by the sympathetic division of the autonomic nervous system. This system prepares you for action by raising heart rate and blood pressure, widening airways for more oxygen, directing blood to the muscles, and releasing stored glucose for quick energy. Pupils dilate, sweat increases, and energy is redirected toward readiness for fight or flight. In contrast, the parasympathetic division calms the body and promotes digestion, while the central nervous system refers to the brain and spinal cord that process information, and the somatic nervous system controls voluntary movements. So, the division that arouses the body and mobilizes energy in stressful situations is the sympathetic nervous system.