Page 282 - New Medley 5 Semester 1

OUR SENSE ORGANS

Our tongue enables us to know the taste of our food. Similarly, we see with our

eyes, hear with our ears, smell with our nose and feel the hot, cold, rough or

smooth with the help of our skin.
The eyes, ears, nose, tongue and skin are our five sense organs.

Eyes – The Organs of Sight

The eyes are the organs of sight. The eyelids and
eyelashes protect the eyes from dust and dirt. The Cornea

black spot in the centre of eye is called the pupil. It Pupil
has an opening through which light enters the eye. Lens

The coloured circle is called the iris. The amount Iris
of light that passes through the pupil is controlled Optic nerve

by the iris. The coloured part of the iris is due to Structure of the eye
presence of melanin pigment in it. Therefore, the eyes of people are found in

different colours. The optic nerve carries messages from the eye to the brain.

Care of the Eyes

We can keep our eyes healthy by taking proper care of them.
 Wash the eyes regularly every morning and evening.

 Do not read in moving vehicles.

 Do not read in dim or very bright light.

 Do not watch television for long, and sit at least ten feet away from it. Never

lie down while watching the television.
 Do not rub eyes with dirty hands.

 Never wipe the eyes with a dirty handkerchief.

Ears – The Organs of Hearing Pinna

The ears are the organs of hearing. They Auditory canal Cochlea
also maintain the balance of our body.

An ear has three main parts — external

ear, middle ear and internal ear.
Auditory
The external ear consists of the pinna Eardrum nerve
Structure of the ear

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