A,B,C    Breathing
D,E,F    Breathing out(exhalation)
B,E    Thorax section (front view)
C,F    Thorax section (side view)
G    Movement of air
H    Movement of ribs
I    Movement of diapgragm
1    Rib
2    Sternum
3    Backbone
4    Trachea
5    Intercostal muscle
5a    Contracted
5b    Relaxed
6    Lung
7    Diaphragm muscles
7b    Relaxed