Exchanging oxygen and carbondioxide between air and lungs because it just involves breathing system but everything else involves hormones.........
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Answer: 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.
hope it help you or someone else if yes happy for you if it a no sorry
<span>Made mostly of collagen. Its also a living growing tissue.</span>