Enumerate the role of rib cage and diaphragm.
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When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.
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rib cate protect lungs from damage and diphagram helo in m breathing
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