- A Voluntary muscle movement via motor neurons
- B Involuntary body functions (heart, digestion)
- C Conscious thought processed in the cerebrum
- D Only the eyes and ears through cranial nerves
Correct answer: B. Involuntary body functions (heart, digestion)
Explanation: The autonomic nervous system (ANS) regulates involuntary functions: heart rate, digestion, respiration, blood pressure.
Concept context
Brain, spinal cord, neurons, reflex arcs, and sense organs.