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Gas exchange

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for science teachers - gas exchange

for science teachers - gas exchange

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  • 1. HEALTH & EXERCISE Module 8
  • 2. Breathing and Gas Exchange
  • 3. The Human Thorax
    • How the structure of the thorax enable ventilation of the lungs and gas exchange.
    • Trachea, cartilage rings, bronchi, bronchioles, alveoli, diaphragm, ribs, intercostal muscles
  • 4.  
  • 5. Trachea
  • 6. Trachea – surrounded by cartilage rings that keep the tube open
  • 7.  
  • 8. Trachea – surrounded by cartilage rings that keep the tube open Left lung
  • 9. Trachea – surrounded by cartilage rings that keep the tube open Left lung Left bronchus, the major division of the trachea as it enters the lungs
  • 10.  
  • 11. Trachea – surrounded by cartilage rings that keep the tube open Left lung Left bronchus, the major division of the trachea as it enters the lungs Bronchiole – a smaller branch off the larger bronchus
  • 12.  
  • 13. Trachea – surrounded by cartilage rings that keep the tube open Left lung Left bronchus, the major division of the trachea as it enters the lungs Bronchiole – a smaller branch off the larger bronchus Heart – responsible for pumping blood around the body
  • 14.  
  • 15. Trachea – surrounded by cartilage rings that keep the tube open Left lung Left bronchus, the major division of the trachea as it enters the lungs Bronchiole – a smaller branch off the larger bronchus Heart – responsible for pumping blood around the body Rib – provides protection for lungs and heart
  • 16.  
  • 17. Trachea – surrounded by cartilage rings that keep the tube open Left lung Left bronchus, the major division of the trachea as it enters the lungs Bronchiole – a smaller branch off the larger bronchus Heart – responsible for pumping blood around the body Rib – provides protection for lungs and heart Right lung
  • 18. Trachea – surrounded by cartilage rings that keep the tube open Left lung Left bronchus, the major division of the trachea as it enters the lungs Bronchiole – a smaller branch off the larger bronchus Heart – responsible for pumping blood around the body Rib – provides protection for lungs and heart Right lung Right bronchus
  • 19. Trachea – surrounded by cartilage rings that keep the tube open Left lung Left bronchus, the major division of the trachea as it enters the lungs Bronchiole – a smaller branch off the larger bronchus Heart – responsible for pumping blood around the body Rib – provides protection for lungs and heart Right lung Right bronchus Alveoli (air sacs), site of gas exchange
  • 20.  
  • 21. Trachea – surrounded by cartilage rings that keep the tube open Left lung Left bronchus, the major division of the trachea as it enters the lungs Bronchiole – a smaller branch off the larger bronchus Heart – responsible for pumping blood around the body Rib – provides protection for lungs and heart Right lung Right bronchus Alveoli (air sacs), site of gas exchange Intercostal muscles lift ribs up & out
  • 22.  
  • 23. Gas Exchange in the alveoli
  • 24. Gas Exchange in the alveoli Oxygen from the air in the alveoli diffuses into the blood. At the same time, carbon dioxide from the blood diffuses into the alveoli.
  • 25. Gas Exchange in the alveoli Oxygen from the air in the alveoli diffuses into the blood. At the same time, carbon dioxide from the blood diffuses into the alveoli. Oxygen dissolves in the moist lining
  • 26. Gas Exchange in the alveoli Oxygen from the air in the alveoli diffuses into the blood. At the same time, carbon dioxide from the blood diffuses into the alveoli. Oxygen dissolves in the moist lining Oxygen diffuses into the blood
  • 27. Gas Exchange in the alveoli Oxygen from the air in the alveoli diffuses into the blood. At the same time, carbon dioxide from the blood diffuses into the alveoli. Oxygen dissolves in the moist lining Oxygen diffuses into the blood the blood carries oxygen to the cells
  • 28. Gas Exchange in the alveoli Oxygen from the air in the alveoli diffuses into the blood. At the same time, carbon dioxide from the blood diffuses into the alveoli. Oxygen dissolves in the moist lining Oxygen diffuses into the blood the blood carries oxygen to the cells cells of the body use oxygen for respiration
  • 29. Gas Exchange in the alveoli Oxygen from the air in the alveoli diffuses into the blood. At the same time, carbon dioxide from the blood diffuses into the alveoli. Oxygen dissolves in the moist lining Oxygen diffuses into the blood the blood carries oxygen to the cells cells of the body use oxygen for respiration carbon dioxide goes into the blood
  • 30. Gas Exchange in the alveoli Oxygen from the air in the alveoli diffuses into the blood. At the same time, carbon dioxide from the blood diffuses into the alveoli. Oxygen dissolves in the moist lining Oxygen diffuses into the blood the blood carries oxygen to the cells cells of the body use oxygen for respiration carbon dioxide goes into the blood the blood carries carbon dioxide to the lungs
  • 31. Gas Exchange in the alveoli Oxygen from the air in the alveoli diffuses into the blood. At the same time, carbon dioxide from the blood diffuses into the alveoli. Oxygen dissolves in the moist lining Oxygen diffuses into the blood the blood carries oxygen to the cells cells of the body use oxygen for respiration carbon dioxide goes into the blood the blood carries carbon dioxide to the lungs carbon dioxide diffuses into the alveoli
  • 32. Breathing
  • 33. Breathing Breathing in (inspiration)
  • 34. Breathing Breathing in (inspiration) intercostal muscles contract
  • 35. Breathing Breathing in (inspiration) intercostal muscles contract rib cage moves up and out
  • 36. Breathing Breathing in (inspiration) intercostal muscles contract rib cage moves up and out diaphragm becomes flatter when the muscle contracts
  • 37. Breathing Breathing in (inspiration) intercostal muscles contract rib cage moves up and out diaphragm becomes flatter when the muscle contracts air rushes in
  • 38. Breathing Breathing in (inspiration) intercostal muscles contract rib cage moves up and out diaphragm becomes flatter when the muscle contracts Breathing out (expiration) intercostal muscles relax
  • 39. Breathing Breathing in (inspiration) intercostal muscles contract rib cage moves up and out diaphragm becomes flatter when the muscle contracts Breathing out (expiration) intercostal muscles relax rib cage moves down and in
  • 40. Breathing Breathing in (inspiration) intercostal muscles contract rib cage moves up and out diaphragm becomes flatter when the muscle contracts Breathing out (expiration) intercostal muscles relax rib cage moves down and in diaphragm becomes dome-shaped when the muscle relaxes
  • 41. Breathing Breathing in (inspiration) intercostal muscles contract rib cage moves up and out diaphragm becomes flatter when the muscle contracts intercostal muscles relax rib cage moves down and in diaphragm becomes dome-shaped when the muscle relaxes air is pushed out
  • 42.