This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head & Neck, Subject name: Anatomy
[{'content': 'Which bony structure protects the middle meningeal artery? \nSelect and explain. \nA. Nasion, B. Pterion, C. Bregma, D. Occiput', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Pterion * The pterion is the region where the frontal, parietal, temporal, and sphenoid joined together It is located on the side of the skull, just behind the temple.* It is the junction between four bones:i) The parietal boneii) The squamous part of temporal boneiii) The greater wing of sphenoid boneiv) The frontal bone* The pterion is known as the weakest part of the skull. The anterior division of the middle meningeal artery runs underneath the pterion Consequently, a traumatic blow to the pterion may rupture the middle meningeal artery causing extradural hemorrhage.", 'role': 'assistant'}]