AAPC A/P Certified Inpatient Coder (CIC) 2026 – 400 Free Practice Questions to Pass the Exam

The autonomic nervous system is indeed responsible for providing involuntary control over smooth and cardiac muscles. This system operates without conscious thought, ensuring that essential bodily functions continue seamlessly. It regulates actions that are critical for survival, such as heart rate, blood pressure, digestion, and respiratory rate.

The autonomic nervous system is divided into two main branches: the sympathetic nervous system, which prepares the body for 'fight or flight' responses, and the parasympathetic nervous system, which promotes 'rest and digest' activities. Together, these branches maintain homeostasis by controlling involuntary processes that involve smooth muscle (found in organs) and cardiac muscle (the heart).

Other systems serve different functions. The central nervous system comprises the brain and spinal cord, which primarily handle conscious thought and voluntary movements. The somatic nervous system also deals with voluntary control, specifically over skeletal muscles. The peripheral nervous system includes all nerves outside the central nervous system and connects the central nervous system to the limbs and organs, playing a role in both voluntary and involuntary functions, but it is the autonomic nervous system that specifically targets smooth and cardiac muscles.