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What takes place when you inhale and exhale?

When you inhale
- the intercostal muscles contract, expanding the ribcage
- the diaphragm contracts, pulling downwards to increase volume of the chest
- pressure inside the chest is lowered and air is sucked into the lungs
When you exhale



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Inhale- oxygen, oxygenated gas exhale- deoxygenated gas
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Gas exchange takes place.
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