It will gradually approach body temperature as it is heated by the body. It is also filtered of large particles by the cilia in the nasal passages and accumulates moisture from the mucus secretions lining the passage.
What happens to the air before it enters the lungs?
As incoming air passes through the nose itself, small, stiff hairs trap dust and other foreign particles.
One job of the nostrils on inhaled air is to of moisten it up by water-vapour
It hits mucus and hair
the air is filtered and moistened
it has snot with it
collects moisture before entering
Breathing
Nose hair filters air that is passing through the nose, for example, dust particles in the air.
It is filtered through the nose hairs.
passing through nose and mouth
Air inhaled through the mouth is not as clean as air inhaled through the nose. Reason for this is that when we inhale air through our nose than it get filtered by hair present in our nose. But air inhaled through our mouth goes directly in without any filtration.
It filters, humidifies and warms passing air
The air is moved around like an airplane during a turbulence to help clean it and warm it for the body.
What happens to a plane's air speed when the nose drops slightly, is that the plane accelerates.
it happens when we can't move air freely through our nose and mouth during sleeping
The respiratory system. The air goes in through the nose, passing through the nasal cavity (in which it is "cleaned"), goes down thus passing through the epiglottis, passes through the trachea, splits in the bronchus, splits more in the bronchioles and finally goes into the alveoli (inside the lungs).
Air enters the the respiratory tract through either the nose or mouth.
mucous and nose hair.