The process of breathing is called ____. Breathing in is called ____, and breathing out is ____. When you inhale, your ____ muscle contracts and moves downwards, and the ____ contract and move the ribs ____ and outwards. This moves air into the ____. Air that is rich in ____ moves into the lungs and then into the ____. At the same time ____ moves from the blood and into the lungs. When you exhale, our diaphragm muscle ____ and moves upwards, and the intercostal muscles relax and move ____ and inwards. This forces air out of your lungs moving out the carbon dioxide.

Breathing

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