pupil and cilliary muscles functions
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Explanation:
the pupil is the eye's aperture and the iris is the diaphragm that serves as the aperture stop.
The ciliary muscle is located in the eye and surrounds the lens. It contracts or relaxes in order for an individual to see at multiple distances. When it contracts, it pulls forward, moving to a frontal portion to relax the fibers that hold the lens in place; this process also allows it to take on a more spherical shape to provide short range focus.
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PUPIL COnTROL QUANTITY OF LIGHT .
CILLIARY MUSCLES CONTROL FOCAL LENGTH OF LENS
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