Question

1. the white structure visible is the optic nerve. does the optic nerve exit the posterior of the eye in the exact centre of the eyeball? hint: the optic nerve is a sensory nerve that leads to the brain. the optic nerves from both eyes meets at the base of the brain before entering the brain; thus, the optic nerve is positioned to one side of the eyeball. use panel b of the diagram to answer question 18. 18. the structures labelled 1 and 2 respectively are the a. aqueous humour and the choroid b. choroid and the vitreous humour c. sclera and the lens d. vitreous humour and the retina

Explanation:

The optic nerve is positioned to one - side of the eyeball's posterior, not at the exact centre as stated in the hint. For question 18, by anatomical knowledge of the eye, the choroid is a vascular layer of the eye and the vitreous humour is the gel - like substance filling the posterior part of the eye. The structure labeled 1 is the choroid and 2 is the vitreous humour.

Answer:

1. No
2. B. choroid and the vitreous humour