Physiology Nervous system d9a72193 Which of the following are inactive during normal respiration? A Pre-Botzinger complex B Dorsal respiratory group of neurons (DRG) C Ventral respiratory group of neurons (VRG) D Pneumotaxic Centre High-Yield Explanation Quite expiration is passive, the Ventral respiratory group of neurons is active only during deep breathing Ref: Ganong 25th ed/page 655