Respiratory Cycle / Diaphragm activity and lung volume -2
When inspiratory muscles, such as the diaphragm relax, the thoracic cavity
and lungs decrease in volume.
Blue indicates that the diaphragm is relaxed. With diaphragm relaxation,
the lung volume decreases. This process is expiration.
The decrease in volume is due to the elasticity of the lungs, which will
be discussed later.
When 1 [ A inspiratory muscles / B expiratory muscles ] such as the diaphragm
relax, the lungs and the thoracic cavity 2 [ A increase / B decrease ]
1 [ A inspiratory muscles ]
2 [ B decrease ]