Question

One of the examples of the action of the autonomous nervous system is

• A. Knee-jerk response
• B. Pupillary reflex
• C. Swallowing of food
• D. Peristalsis of the intestines
• E. All of the above

Answer 1

The correct option is E All of the above

Esophageal peristalsis and sphincter function are controlled by the autonomic nervous system. Swallowing is a complex mechanism using both skeletal muscle (tongue) and smooth muscles of the pharynx and esophagus. The autonomic nervous system (ANS) coordinates this process in the pharyngeal and esophageal phases. Knee jerk is a sudden kicking of the lower leg after the tendon below knee cap has been tapped. The pupillary reflex is also controlled by autonomic nervous system.