.
Either side
At the back
At the front
At the bottom
Above
Behind
Below
In front
Inhalation
Exhalation
Gaseous exchange
Circulation
To transport air in and out of the lungs
To supply air to the alveoli
Transfer oxygen to the blood
Transport air to the lungs
Alveoli
Bronchioles
Trachea
Larynx
Intercostal muscles
Diaphragm
Internal obliques
Abdominals
Diaphragm
Intercostal muscles
Internal obliques
Abdominals
Relaxes and moves up
Relaxes and moves down
Contracts and moves up
Contracts and moves down
Pharynx, larynx, trachea, bronchi, bronchioles, alveoli
Larynx, pharynx, trachea, bronchi, bronchioles, alveoli
Bronchioles, bronchi, trachea, pharynx, larynx, alveoli
Trachea, bronchioles, bronchi, pharynx, larynx, alveoli
21%
25%
18%
23%
0.04%
0.4%
4%
1.4%
Oxygen
Carbon dioxide
Nitrogren
Carbon monoxide
Alveoli
Bronchioles
Bronchi
Veins
Diffusion
Infusion
Effusion
Profusion
16
18
20
14