This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Lamina papyracea is between ? \nSelect and explain. \nA. Optic nerve and orbit, B. Maxillary sinus and orbit, C. Ethmoid sinus and orbit, D. Cranial cavity and orbit', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The thinnest poion of medial wall of orbit is the lamina papyracea which separates ethmoid sinuses from orbit. o Infection from ethmoidal sinus can easily breach this paper thin bone and affect the orbital contents.', 'role': 'assistant'}]