Define Inhalation nd Exhalation.
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The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out (called expiration, or exhalation). This exchange of oxygen and carbon dioxide is called respiration.
It is the act of exhaling air taken in and is passive. Here, the diaphragm relaxes, moving upwards into the chest cavity. The intercostal muscles between the ribs relax, causing the area of the chest cavity to reduce.
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