This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy, Development and clinical examination, Subject name: Ophthalmology
[{'content': 'Optic nerve fibres once cut, do not regenerate because they are not covered by \nSelect and explain. \nA. Myelin sheath, B. Neurilemma, C. Both of the above, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Optic nerve It is a continuation of the nerve fibre layer of the retina, which consists of the axons originating from the ganglion cells. It also contains the afferent fibres of the pupillary light reflex. Morphologically and embryologically, the optic nerve is comparable to a sensory tract. Unlike peripheral nerves it is not covered by neurilemma (so it does not regenerate when cut). Reference :- A K KHURANA; pg num:-287', 'role': 'assistant'}]