Respiratory System

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

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

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