Function of ciliary muscles is

To contract pupil when one move in sunlight

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To keep valve in position

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To rotate eye ball

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To change shape of lens

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Solution

The correct option is B To change shape of lens
Muscles of the ciliary body of the eye, located between the sclera and the fine ligaments suspends the lens. They are composed of both longitudinal and circular fibres, that change the shape of the lens, enabling the eye to focus upon near or distant objects.

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Similar questions

Q. Ciliary muscles of human eye can contract or relax. How does it help in the normal functioning of the eye?

Q. When the ciliary muscles are contracted, the focal length of the eye lens

Q. When one is seeing things that are nearby, the ciliary muscles contract to decrease the focal length of the eye lens.

(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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