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Definition of Second cranial nerve
1. Noun. The cranial nerve that serves the retina. 
Exact synonyms: Nervus Opticus, Optic Nerve, Optic Tract
Group relationships: Visual System, Betweenbrain, Diencephalon, Interbrain, Thalmencephalon
Generic synonyms: Cranial Nerve
Group relationships: Visual System, Betweenbrain, Diencephalon, Interbrain, Thalmencephalon
Generic synonyms: Cranial Nerve
Medical Definition of Second cranial nerve
1. 



