About Lesson
– Definition of the Autonomic Nervous System: The autonomic nervous system (ANS) is a control system that regulates bodily functions such as heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal. It operates unconsciously and consists of two main branches: the sympathetic nervous system (which stimulates the body’s fight-or-flight response) and the parasympathetic nervous system (which promotes the rest-and-digest response).
– Role in the Body: The ANS is essential for maintaining homeostasis and responding to stress. It controls involuntary functions that are critical for survival and overall well-being.