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
[{'content': 'Which is true about central retinal aery? \nSelect and explain. \nA. Anastomosis without vessels in or serrata, B. Is an end aery, C. Is branch of ciliary aery, D. Supplies the optic nerve', 'role': 'user'}, {'content': "Answer: B \nExplanation: The central aery of the retina -It is an end aery. It does not have effective anastomoses with other aeries. Occlusion of the aery results in blindness. The intraocular pa of the aery can be seen, in the living, through an ophthalmoscope. Ref : B D Chaurasia's Human Anatomy , seventh edition , volume 3 , pg. no.,216.", 'role': 'assistant'}]