The dark muscular diaphragm that controls the size of the pupil is the

Ciliary muscle

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Aqueous humour

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Iris

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Cornea

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Solution

The correct option is C
Iris

The iris is a dark muscular diaphragm that controls the size of the pupil. The pupil is a hole located in the center of the iris that allows light to enter the eye.

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Similar questions

Label the eye parts correctly.

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Label the eye parts correctly.i) Aqueous humour ii) vitreous humour iii) cornea iv) iris v) pupil

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(a) lens, iris, optic nerve

(b) lens, aqueous humour and vitreous humour

(d) cornea, lens, optic nerve

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