《英文msh詞典》Cranial Nerve II
[同義詞] Cranial Nerve II
[主題詞] Optic Nerve
[中文釋義] 第Ⅱ顱神經(jīng)
[英文釋義] The 2nd cranial nerve. The optic nerve conveys visual information from the retina to the brain. The nerve carries the axons of the retinal ganglion cells which sort at the optic chiasm and continue via the optic tracts to the brain. The largest projection is to the lateral geniculate nuclei; other important targets include the superior colliculi and the suprachiasmatic nuclei. Though known as the second cranial nerve,it is considered part of the central nervous system.