Downward movement of the diaphragm increases lung volume, which lowers the pressure inside the lungs, causing air to be pushed in by the higher external pressure.
Downward movement of the diaphragm increases lung volume, which lowers the pressure inside the lungs, causing air to be pushed in by the higher external pressure.
| Front | Explain how downward movement of the diaphragm leads to air entering the lungs. |
|---|---|
| Back | Increases volume (in lungs / thorax) Lowers pressure (in lungs / thorax) Air (pushed) in by higher outside pressure / down pressure gradient; |
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