This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
Lamina papyracea separates nose from 
Select and explain. 
A. Sphenoid bone, B. Orbit, C. Frontal bone, D. Maxillary sinus
B: Orbit
Answer: B: Orbit 
Explanation: Ref: Henry Gray. Anatomy of the Human Body. The lateral surface is formed of a thin, smooth, oblong plate, the lamina papyracea (os planum), which covers in the middle and posterior ethmoidal cells and forms a large pa of the medial wall of the orbit; it aiculates above with the orbital plate of the frontal bone, below with the maxilla and orbital process of the palatine, in front with the lacrimal, and behind with the sphenoid.