How are respiratory movements in humans with calm inhalation and exhalation?
| May 30, 2020 | Education
1) when inhaling, there is a contraction of the intercostal muscles and diaphragm, the volume of the chest cavity increases;
2) the lungs passively stretch due to their elasticity and negative pressure in the pleural cavity, the air pressure in them becomes less than atmospheric;
3) during exhalation, relaxation of the intercostal muscles and diaphragm occurs, the volume of the chest cavity and lungs decreases, the air pressure in them increases.
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