Through your mouth and nose
Oxygen enters via the lungs.
Oxygen rich air enters the body through the lungs.
oxygen
Oxygen enters via the lungs.
your nose
Air, oxygen
The respiratory system.
mouth and nose
About 20%.
The function of the respiratory system is to provide the body with oxygen. Oxygen enters the body through the respiratory system and is carried in blood throughout the body.
The nose.
Air enters the body when you inhale (Breathe in) air enters through the mouth and into the lungs. and then exhale (Breathe out) carbon dioxide (CO2)