Describe the change that take place (i) around the rib cage (ii) diaphragm (iii) chest cavity, during inspiration. state the effect of these changes
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During inhalation, the ribs move up and outward and the diaphragm moves in. this movement decrease the space in our chest cavity and the air rushes in. During exhalation, the ribs moves down and inward and the diaphragm moves up. This movement increases the space in our chest cavity and the air is pushed out.
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