Gas Exchange and Circulation

When you increase pressure in the space the lung

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Unformatted text preview: their respective partial- pressure gradients. Human Lungs: Diaphragm is a muscle; its normal relax state is deflation. When it contracts, it pulls itself downwards. This makes that space a bit larger. There is a defined pressure in the space between lungs and diaphragm. The space gets smaller, and the pressure will increase. The space gets bigger, and the pressure will decrease. When you increase pressure in the space, the lung expands. The lung only expands and contracts due to difference in pressure. It is allowed to do this; there is no muscle that pushes them. The pressure you’re comparing is the air pressure you’re taking in when you in...
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