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': 'Following foramina are found in greater wing of sphenoid except: \nSelect and explain. \nA. Foramen rotundum, B. Canaliculus innominatus, C. Foramen spinosum, D. Optic canal', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Foramen present in greater wing of sphenoid:\n\nForamen rotundum.\nEmissory sphenoidal foramen/ foramen of Vesalius.\nForamen ovale.\nCanaliculus innominatus.\nForamen spinosum.\n\nOption 4 - Optic canal is located in median part of middle cranial fossa. It is bounded laterally by lesser wing of sphenoid, in front and behind by anterior and posterior roots of lesser wing,\xa0and medially by body of sphenoid.', 'role': 'assistant'}]