<prompt> Which of the following are inactive during normal respiration -Pre-Botzinger complexDorsal group of neuronsVentral VRG group of neuronsPneumotaxic centre  <response>: Ans. c Ventral VRG group of neuronsRef: Ganong, 25th edp.655At rest, expiration is a passive processVentral VRG group of neurons controls expiration. So, they are inactive during normal respiration 