This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
[{'content': 'Monro-kellie doctrine is related to injury of - \nSelect and explain. \nA. Head, B. Abdomen, C. Chest, D. Leg', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Head(Ref: Ganong, 25th ed/p.603)Monro - Kellie doctrine states that the skull comprises of three components namely blood, CSF and cerebral parenchyma.If any of the component increases, it is always at the cost of others.For example, if there is obstruction to CSF flow, then CSF pressure rises and it automatically compress brain parenchyma and blood flow', 'role': 'assistant'}]