This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory System, Subject name: Physiology
[{'content': 'CO2 increases ventilation by acting mainly on receptors of- \nSelect and explain. \nA. Apneustic centre, B. Pneumotaxic centre, C. Ventral surface of medulla, D. DPG', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Ventral surface of medulla(Ref: Ganong, 25th ed/p.657)The locations where central chemoreceptors are present are,#Ventral surface of medulla#Nucleus of tractus solitarius#Locus ceruleus#Hypothalamus', 'role': 'assistant'}]