Respiratory System


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Want to learn about the respiratory system? Here is everything you need to know for BTEC or GCSE

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Respiratory System

  1. 1. Respiration <br />BTEC Sport<br />Miss Bowe<br />
  2. 2. Breathe: do steps 1,2,3 and 4<br />Come in and find which table has your name<br />Take your coat, hat, scarf off and sit down quietly<br />Stop talking, making noises and listen<br />During the lesson, speak only when I ask a question or when I ask you to work with a partner or in a group.<br />Warnings will be given for ANY disruptive behaviour<br />Rewards will be given for POSITIVE contributions<br />
  3. 3. Objectives<br />Understand what the cardio-respiratory system is<br />Label the pathway airs takes from the nose to the lungs<br />Describe gas exchange and where it takes place<br />Describe what happens when we<br />Breath in (inspiration)<br />Breath out (expiration)<br />
  4. 4. The Cardiac System (The Heart)<br />The Respiratory System (The Lungs)<br />The Cardio - RespiratorySystem (The Heart AND the Lungs working together)<br />
  5. 5. Capillaries<br />Capillaries<br />Muscle<br />The Cardio-Respiratory System<br />Aorta<br />Veins<br />Arteries<br />Vena<br />Cavae<br />O2<br />CO2<br />Venules<br />Arterioles<br />
  6. 6. Functions<br /><ul><li>The intake of oxygen
  7. 7. The removal of carbon dioxide</li></ul>The Respiratory System<br />
  8. 8. The Respiratory System<br />Structure<br />Mouth<br />Epiglottis<br />Trachea<br />Bronchus<br />Lung<br />
  9. 9. Structure of the lung<br />Trachea<br />Bronchus<br />Bronchioles<br /> Alveoli<br />
  10. 10. Muscles involved in breathing<br />Diaphragm<br />A domed shaped muscle at the bottom lungs and ribs<br />Intercostals<br />Muscles found in between each rib to help them move<br />
  11. 11. How do we make space for the O2 coming in?<br />Air is sucked down the wind pipe and into the lungs<br />The intercostal muscles contract, allowing rib cage moves upwards and outwards.<br />The lungs expand to allow more air in<br />The diaphragm contracts and pulls down to make the chest larger<br />INSPIRATION (breathing in)<br />
  12. 12. How do we force the CO2 back out again?<br />When we breath out we squeeze the carbon dioxide out<br />The lungs are compressed, pushing air out of the lungs and up the windpipe<br />Intercostal muscles relax, lowering the rib cage and making the chest smaller<br />The diaphragm also relaxes to make the chest smaller<br />Video: muscles involved in inspiration and expiration<br />EXPIRATION (breathing out)<br />
  13. 13. Breathing in and out ...<br />Breathing in … is hard work therefore we CONTRACT<br />Breathing out … is easy therefore we RELAX<br />Try it now … listen to this track and breathe in and out<br />Can you see your body creating space for the oxygen when you breathe in?<br />
  14. 14. The alveoli and gas exchange<br />Alveoli<br /><ul><li>Air sacs located at the end of the bronchioles
  15. 15. Site of gaseous exchange
  16. 16. Oxygen O2 diffuses into the blood
  17. 17. Carbon Dioxide diffuses into the alveoli</li></ul>Oxygen<br /><ul><li>diffuses from the alveoli into the blood (via the capillaries)</li></ul>Carbon dioxide <br /><ul><li>diffuses from the blood into the alveoli and breathed out</li></li></ul><li>The alveoli and gas exchange<br />
  18. 18. The alveoli and gas exchange<br /><ul><li>The bronchi branch into air tubes which end in alveoli
  19. 19. The alveoli is surrounded by a massive blood supply
  20. 20. The alveoli are covered in tiny capillaries
  21. 21. Oxygen can pass through the thin walls of each alveoli and capillary, and into the blood
  22. 22. Carbon Dioxidecan pass from the blood stream and capillaries andinto the alveolus</li></ul> <br />
  23. 23. O2<br /> ALVEOLI<br />Capillary<br />(Oxygenated blood)<br />Bronchiole<br />Alveoli<br />O2<br />Alveoli<br />CO2 Rich blood<br />
  24. 24. Capillary<br />Bronchiole<br />Alveoli<br />CO2<br />Alveoli<br />CO2 Rich blood<br /> ALVEOLI<br />Capillary (Deoxygenated blood)<br />
  25. 25. A summary of the respiratory system…<br />Watch the video and if you need to make notes… … there will be a game show style quiz after<br />