Which part of the nervous system is primarily responsible for initiating the body's response to stress?

• A. The sympathetic nervous system
• B. The enteric nervous system
• C. The somatic nervous system
• D. The parasympathetic nervous system

Answer: (A)

Verified step by step guidance

1. Understand that the nervous system is divided into several parts, each with specific functions related to body regulation and response.
2. Identify that the sympathetic nervous system is part of the autonomic nervous system, which controls involuntary bodily functions.
3. Recognize that the sympathetic nervous system is responsible for the 'fight or flight' response, which is the body's immediate reaction to stress.
4. Contrast this with the parasympathetic nervous system, which promotes 'rest and digest' activities, helping the body to relax after stress.
5. Note that the enteric nervous system controls the gastrointestinal system, and the somatic nervous system controls voluntary muscle movements, so neither primarily initiates stress responses.