1.6 Our nose

How is our nose important to us?
Parts of the nose
Our nose is made up of the nostrils and nosal chamber.

Nostrils: Scents are carried by titny particles which float in the air. When we sniff, these scent particles enter our nose through our nostrils.

Nosal Chamber: The nasal chamber is a big space in our nose.
The top part of the nosal chamber contains structures that pick out scent particles. These structures send messages to our brain to tell us what we are smelling.

Using our nose to smell
Smelling helps us to tell if something smells fragrant or has an unpleasant scent.

The flowers smell fragrant.

The garbage has an unpleasant scent.

Smelling also warns us of danger

The scent tells Dr Atom that the egg is burnt.

The scent tells Sue that the food has gone bad.