This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy, Subject name: Anatomy
[{'content': 'Which of the following is a pneumatic bone? \nSelect and explain. \nA. Tibia, B. Frontal bone, C. Clavicle, D. Femur', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B Frontal boneRef: Gray, 38th ed. pg. 436* Pneumatic bones are bones which contain air filled cavities for making the skull light weight, and aid resonance of voice and air conditioning. These include: Frontal, Ethmoid, Maxilla, Sphenoid and mastoid.Extra Mile* Sesamoid bones are patella, pisiform and fabella.* Membranous (dermal) bones are skull vault bones and facial bones.', 'role': 'assistant'}]