Your breathing system gets oxygen into your bloodand removes carbon dioxide.
When you breath in the air goes down the windpipe and into your lungs.
Breathing ventilation is the moving of air when you breathe
Inside the lungs are thousands of air sacs, which contain yiny pockets called alveoli. these are surrounded by blood vessels called capillaries.
Gas exchange happens in the lungs when oxygen in the air diffuses into the blood. and carbon doixide from the the blood plasma diffuses into the air into the lungs.
The lungs are adapted for fast gas exchange.
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alevoli and cappillaries have thin walls.
mucus is produced by cells in the tubes in the lungs, it traps bits of dirt and cilia (tiny hairs) move it upwards so it can be swallowed.
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