The sympathetic nervous system is responsible for

• A. Preparing the body to react to situations of stress or emergency.
• B. Rest and digest response.
• C. Coordinating voluntary muscle movement.
• D. Digestive function during meals.

Answer: (A)

The sympathetic nervous system gears the body up for action in stressful or emergency situations. When activated, it increases heart rate and strength of contraction, dilates airways, widens pupils, and redirects blood toward muscles and energy stores, all to prepare for a quick response. It also tends to slow or pause nonessential functions like digestion to conserve energy for the crisis at hand. This is the classic fight-or-flight response.

In contrast, the rest-and-digest or parasympathetic system promotes calming, digestion, and energy storage, which is why that option isn’t describing the sympathetic role. Coordinating voluntary muscle movement involves the somatic/motor system, not this autonomic branch, and digestive function during meals is typically facilitated by parasympathetic activity, not sympathetic.