Question

give functions of the following 1 ciliary muscles 2 cornea 3 iris and pupil 4 retina​..

Answer 1

Ciliary muscles

Ciliary muscle helps in adjusting the focal length of the lens by contraction or relaxing.

Cornea

Cornea is the membrane covering the front of the eye that is bulged out and is responsible for the maximum refraction of the light that enters the eye.

Iris

Iris forms the coloured part of the eye. It adjusts the size of the pupil, thereby controls the amount of light entering the eye.

Pupil

Pupil controls the amount of light entering the eye

Retina

Retina is actually a canopy of the nerve endings of the optical nerve through which images are converted into electrical impulses and transferred to the brain for realization of the image.