10. Sense organs

The sense organs are specialized organs that help in perceiving world around us. They serve as the windows to the outside the world. There are five sense organs in the body. They are:

These sense organs make us aware of our surroundings. One can hear, smell, taste and feel only through these sense organs. These are the organs that govern the association and interaction of humans with the environment.

The eyes are the organs that help to see and observe things around us. For example, it helps to view the colour, shape, size, whether the object is near or far, moving or at rest, etc.

 

The eyelids and the eyelashes protect the eyes. The three main parts of the eyes are the cornea, iris and pupil. The iris in the eye is the coloured part that controls the pupil's size and diameter, which directly affects the amount of light entering the eyes.

 

It is the sense organ that helps to hear and differentiate the sounds around us. The ear is divided into three main sections. They are the inner ear, outer ear and middle ear.

 

The outer ear in human beings is made up of an external flap called the pinna. Along with perceiving sound, the ear also helps maintain the balance of the body when a person is running, walking or climbing.

 

It is an olfactory organ that helps in perceiving the different smells. It is a sense organ that also aids the sense of taste.

 

It is the largest sense organ of the body as it covers the entire body. The organ helps to feel the objects around us by touching to find if the object is hot or cold, smooth or rough, dry or wet, hard or soft. Skin is the organ that covers the body and protects it from germs. It also plays a role in keeping the body moist and regulating the body temperature.