The breath serves two successive stages, carried out to the muscular action of the diaphragm and the intercostal muscles, it is controlled by the respiratory center of the medulla oblongata. In inspiration, the diaphragm is contracted and the intercostal muscles rise and widen the ribs.
The rib cage volume gains and penetrates outside air to fill this space. During the exhalation, the diaphragm relaxes and the ribs down and move inland. The rib cage diminishes their ability and lungs leak air outwards. Body needs oxygen and removes carbon dioxide or carbon dioxide gas.
The rib cage volume gains and penetrates outside air to fill this space. During the exhalation, the diaphragm relaxes and the ribs down and move inland. The rib cage diminishes their ability and lungs leak air outwards. Body needs oxygen and removes carbon dioxide or carbon dioxide gas.
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