The Sense organs:
The sensing powers of our body tell us what is going on in
the world around us. As we all know, the five main senses that we have are
sight, hearing, smelling, taste and touch. Our sense organs send messages about
what they sense, to our brain through the nerves. Then our brain receives these
messages and interprets them so that we understand what they really are. So,
let us now see how we can scientifically explain the workings of some of our
sense organs.
How do we taste and smell:
Our tongue is covered with thousands of taste receptors (also
called taste buds). These are grouped together in special areas on our tongue.
So we taste sweetness at the front, bitterness at the back, and sourness and saltiness
at the side of our tongue. Also we have smell receptors (or scent receptors) in
our nose. So we sniff, tiny particles in the air are carried to these smell
receptors. Then the taste and smell receptors send messages (or signals) to our
brain.