EAR:

Ear is divided into three parts: the outer ear, which gathers sound like a radar scanner; and the middle ear , whose gear-like assembly of bones amplify the sounds they receive; and the inner ear, which converts sound vibrations into electrical impulses and works out the position the head is in (balance).

The resulting messages are transmitted to the brain along a pair of nerves, which lie side by side : the vestibular nerve for balance and the cochlear nerve for sound.

NOSE:

Nose is one of body most important sensory organs, although we probably rather take it for granted. It has three main functions.

It is the natural pathway by which air enters the body in the normal course of breathing. The air is warmed, moistened and filtered in nose before entering the lungs. The nose also act as a protective device. If irritants such as dust enter, they are expelled by sneezing and do not have a chance to damage the lungs. Finally of course, the nose is the organ of smell.

THROAT:

Throat is the term popularly used to describe the area that leads into the respiratory and digestive tracts. It extends from the mouth and nose to the oesophagus and trachea, and is composed of two main parts: the pharynx and the larynx.