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Building A Model Lung

Building A Model Lung. 1. Design your own working model of the lung using the materials given below: transparent plastic bottle , balloon , rubber sheet (plastic glove), clay, Y-tube, tape/ rubber band, other accessories 2. Complete the handout for the

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Building A Model Lung

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  1. Building A Model Lung 1. Design your own working model of the lung using the materials given below: transparent plastic bottle, balloon, rubber sheet (plastic glove), clay, Y-tube, tape/ rubber band, other accessories 2. Complete the handout for the model building activity.

  2. The Mechanics of Breathing

  3. DIAPHRAGM Dome-shaped muscle attached to rib cage that contracts& flattens out during breathing

  4. Observe what happens to the diaphragm.

  5. PRESSURE force of air pressing down Less air particles- Low air pressure More air particles- High air pressure

  6. High to Low Pressure (Many to Less) How do you change thepressure?

  7. Air pressure (inside balloon Air pressure (empty space) Air pressure (outside air)

  8. Breathing – The Lungs Breathing animation "nature hates a vacuum" http://www.biosci.ohiou.edu/introbioslab/Bios170/diffusion/Diffusion.html

  9. Breathing in - inhaling Rib cage expands Diaphragm moves downward Pressure reduces inside lung Result – air is drawn into the lungs

  10. Breathing out - exhaling Rib cage contracts Diaphragm moves upward / inward Pressure increases inside lung Result – air is pushed out of the lung

  11. BREATHING

  12. Breathing – The Lungs Breathing animation Write a paragraph explanation/ summary on how breathing works. Discuss the role of the ribcage and the diaphragm and how these creates a pressure difference so breathing can take place. "nature hates a vacuum" http://www.biosci.ohiou.edu/introbioslab/Bios170/diffusion/Diffusion.html

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