The second cranial nerve in human originates from

Ciliary muscles of eye

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Retina only

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Retina and lens

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Occular muscles of eye

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Solution

The correct option is A Retina only
The cranial nerves are those nerves which carry nerve impulse to the brain for The second cranial nerve in human originates from retina only. The optic nerve, is 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. So, the correct answer is option B.

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(a) Draw a labelled diagram of the human eye. Label the following parts on this diagram: Cornea, Iris, Pupil, Ciliary muscles, Eye-lens, Retina, Optic nerve and Blind spot.

(b) What are the functions of the following parts of the eye?

(i) Iris (ii) Eye-lens (iii) Ciliary muscles (iv) Retina (v) Optic nerve

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