Give the scientific names of the following parts of the eye:(a) carries signals from an eye to the brain.(b) muscles which change the shape of the eye-lens.(c) a hole in the middle of the iris.(d) a clear window at the front of the eye.(e) changes shape to focus a picture on the retina.

(a) Optic nerve carries signals from an eye to the brain. 

(b) Ciliary muscles change the shape of the eye-lens.

(c) Pupil is a hole in the middle of the iris.  

(d) Cornea is a clear window at the front of the eye.  

(e) Eye lens changes shape to focus a picture on the retina.

Explanation

Optic nerve - It is located in the back of the eye, and its main function is to transfer or carry visual information (signal) from the retina of the eye to the visual centers of the brain in the form of impulses.

Ciliary muscles are circular muscle which accommodates the eye lens, means it changes the thickness of the eye-lens while focussing by changing its shape and thereby enable us to see objects that are near or far away.

Pupil is a hole in the middle of the iris, which appears black because the light that passes through it, gets absorbed by the retina and is not reflected back. Its function is to control the amount of light entering the eye with the help of the iris so that it can be focused on the retina to begin the process of sight.

Cornea is the front part of the eye-bulging outwards, which is made of a transparent substance, and the outer surface of the cornea is convex in shape. Because of this shape, when the light rays coming from an object enter the eye through the cornea, it just bends or refracts.

Lens or the eye-lens is a convex lens made of transparent, soft, and elastic tissues like a jelly made of proteins, that control the formation of an image on the retina. It is connected with the ciliary muscles that accommodate the eye lens, which means, it changes the shape of the lens to focus the light rays coming from near or distant objects on the retina.