what are the functions of chest
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The chest wall is comprised of skin, fat, muscles, and the thoracic skeleton. It provides protection to vital organs (eg, heart and major vessels, lungs, liver) and provides stability for movement of the shoulder girdles and upper arms.
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Answer:
ok
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Explanation:
It is so because when the volume of chest cavity increases the foul air that is carbon dioxide goes out from our body through the lungs but when it decreases or expands the air that is Oxygen comes in our body through lungs
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