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The anterior portion of sclera is called ________. A Lens B Iris C Pupil D Ciliary body E Cornea

The anterior portion of sclera is called ________.

A

Lens

B

Iris

C

Pupil

D

Ciliary body

E

Cornea

 

Grade:12

1 Answers

Omveer Singh
askIITians Faculty 52 Points
10 months ago

 

A. Lens of eye is a crystalline structure in the eye ball which is held in place by ligaments that are attached to ciliary body. It is biconvex in nature and focus the light rays on the retina.
B. Iris is a opaque and pigmented structure in eye. It is visible as coloured portion. It regulates the amount of light entering the eye by controlling the size of pupil.
C. Pupil is the aperture of eye through which light rays enter the eye.
D. Ciliary body is a part of eye consisting of ciliary muscles that change the shape of lens.
E. Cornea is the anterior portion of sclera which absorbs oxygen from the air. It is the only part of human body which is devoid of blood supply and absorbs oxygen directly from the air.
So, the correct answer is 'Cornea'.

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