What does the autonomic nervous system primarily control?

The autonomic nervous system primarily controls involuntary functions within the body. This includes essential processes such as heart rate, blood pressure, respiration, digestion, and glandular functions. The system operates without conscious thought, managing the body's automatic responses and maintaining homeostasis.

In contrast to voluntary movements, which are primarily regulated by the somatic nervous system, the autonomic nervous system's role in involuntary functions is crucial for survival. It adjusts bodily functions automatically in response to changes in internal or external environments, ensuring the body can respond to various stimuli without requiring conscious effort.