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单词 Cranial nerve II
释义

Cranial nerve II

英语百科

Optic nerve

Dissection of Optic Nerve from above showing parts. Courtesy Dr. John B. Selhorst
Paris views showing vision with loss of both temporal visual fields

The optic nerve, also known as cranial nerve II, is a paired nerve that transmits visual information from the retina to the brain. The optic nerve is derived from optic stalks during the seventh week of development and is composed of retinal ganglion cell axons and glial cells. In humans, the optic nerve extends from the optic disc to the optic chiasm and continues as the optic tract to the lateral geniculate nucleus, pretectal nuclei, and superior colliculus.

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