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To explain what makes our lungs so good at getting oxygen into the blood

To explain what makes our lungs so good at getting oxygen into the blood. WILFs:. Wayne’s legs need lots of energy during a race. So his lungs take air in fast!. Engage. 3. And get the oxygen into his blood ... 20 times as fast as usual!. Engage. 4. discuss.

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To explain what makes our lungs so good at getting oxygen into the blood

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  1. To explain what makes our lungs so good at getting oxygen into the blood

  2. WILFs:

  3. Wayne’s legs need lots of energy during a race. So his lungs take air in fast! Engage 3

  4. And get the oxygen into his blood ...20 timesas fast as usual! Engage 4

  5. discuss What makes lungs so good at taking in oxygen? Explore Elicit

  6. Oxygen diffuses through lung tissue to get to your blood. We can model that with something you can see. Explore SS1 - 4

  7. Use the model to compare a hollow lung with one full of air spaces. Explore SS1 - 4

  8. discuss What did the model show you? And what does that tell us about diffusion in lung tissue? Explore

  9. So alveoli give lungs a huge surface area for gas exchange… ...and their walls are really thin and surrounded by blood vessels. Explain 9

  10. So alveoli give lungs a huge surface area for gas exchange… ...which lets gases diffuse much faster between the air spaces and your blood. Explain

  11. These delicate tissues have to be protected from dirt and germs. Extend 11

  12. Mucus protects them. Extend 12

  13. The more we understand about mucus the more we can help athletes like Wayne. Extend

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