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What happens to cause air to be exhaled from the lungs?

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the diaphragm relaxes and that causes the ribcage to compress (get smaller) this pushes air out, and you have exhailed
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What two things happen to cause air to be drawn into your lungs?

The diaphragm moves down, and the intercostal muscles pull the ribsup and out. Both movements increase the volume of the chest cavity,thus reducing the pressure in the lungs.

What happens when you inhale the air you exhale?

The air you exhale normally contains 19% less oxygen than inhaled air, with a 4% to 5% level of carbon dioxide and other gases, along with added water vapor. (Which is why you

What happen to your lungs as you exhale air?

When you breathe out, or exhale, your diaphragm relaxes and moves upward into the chest cavity. The intercostal muscles between the ribs also relax to reduce the space in the