In the context of the autonomic nervous system, which division is primarily responsible for the 'fight or flight' response?

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

Answer: (A)

Verified step by step guidance

1. Understand the autonomic nervous system (ANS): The ANS is a part of the peripheral nervous system that controls involuntary physiological functions, such as heart rate, digestion, and respiratory rate. It has two main divisions: the sympathetic and parasympathetic divisions.
2. Learn the role of the sympathetic division: The sympathetic division is responsible for preparing the body to respond to stressful or emergency situations. This is commonly referred to as the 'fight or flight' response. It increases heart rate, dilates airways, and redirects blood flow to muscles, among other effects.
3. Contrast the parasympathetic division: The parasympathetic division is often referred to as the 'rest and digest' system. It promotes relaxation and recovery by slowing the heart rate, stimulating digestion, and conserving energy.
4. Exclude unrelated divisions: The somatic division controls voluntary movements of skeletal muscles and is not part of the autonomic nervous system. The enteric division regulates gastrointestinal functions but operates independently of the 'fight or flight' response.
5. Conclude that the sympathetic division is the correct answer: Based on its role in activating the body's stress response, the sympathetic division is primarily responsible for the 'fight or flight' response.