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1.2.3 Lesson 2 - immediate and long term effects

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1.2.3 Lesson 2 - immediate and long term effects

  1. 1. GCSE PEUnit 1.2.3 The respiratory system
  2. 2. Start as we mean to go on.....Can you explain the following 2 key sayings? Tidal Volume‘is the amount of air inspired and expired witheach normal breath at rest or during exercise’ Vital Capacity ‘is the greatest amount of air that can bemade to pass into and out of the lungs by the most forceful inspiration and expiration’
  3. 3. The respiratory system… Respiratory System
  4. 4. Today’s learning objectives:By the end of this lesson you should be able to:  Explain and understand how the respiratory system works Understand the immediate effects of exercise on the respiratory system.Understand the long term effects of exercise on the respiratory system.
  5. 5. Immediate effects Breathing quickens and deepens:How efficient your breathing is effects how much oxygen you can remove from the air.If you can’t get the oxygen to your lungs then it does not matter how fast your heart beats! Oxygen debt ‘the extra oxygen consumed during recovery from a period of strenuous physical activity, compared with the amount which would usually have been consumed over the same length of time at rest’ Anaerobic exercise!
  6. 6. Immediate effects Breathing quickens and deepens: Task 3 Page 9 See how your breathing rate changes 1. At rest 2. Moderate exercise 3. Strenuous exercise Did oxygen debt occur???
  7. 7. Long term effects of exercise What are the long term effects of exercise on the respiratory system? Complete Task 4 on page 9 With a partner you need to brainstorm the question above.
  8. 8. Long term effects of exercise What are the long term effects of exercise on the respiratory system? • Better delivery of oxygen to working muscles (cope better with exercise) • Carbon dioxide removed more efficiently (cope with greater increase in CO2) • Vital capacity is increased (lungs become more efficient) • Increase in number of alveoli (more available for gaseous exchange) • Increase in capillaries around alveoli (more O2 into blood and muscles)
  9. 9. Smoking How does smoking effect alveoli and gaseous exchange? Task 5 page 12
  10. 10. Smoking
  11. 11. Today’s learning objectives:By the end of this lesson you should be able to:  Explain and understand how the respiratory system works Understand the immediate effects of exercise on the respiratory system.Understand the long term effects of exercise on the respiratory system.
  12. 12. Revision video:
  13. 13. HomeworkComplete the following:• Any missing notes from the lesson.• Hwk 3 Page 11• Revise for an end of unit test covering units 1.2.2 and 1.2.3 next lesson

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  • chloehunt39

    Mar. 7, 2015
  • ElafLouay

    Nov. 6, 2018

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