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Y8 Humans 01 breathing
Y8 Humans 01 breathing
Y8 Humans 01 breathing
Y8 Humans 01 breathing
Y8 Humans 01 breathing
Y8 Humans 01 breathing
Y8 Humans 01 breathing
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Y8 Humans 01 breathing

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Lesson on breathing and the respiratory system

Lesson on breathing and the respiratory system

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Transcript

  • 1. Breathing
    • Learning Objectives :
    • To understand the role of the respiratory system in humans.
    • To know how breathing links to cellular respiration.
    • To visualise how the lungs work using a model.
  • 2. Feel yourself breathing
    • Sit still and close your eyes
    • Concentrate on what happens as you breathe in and out.
    • Focus on how your chest expands and relaxes.
    • Think about what parts of your body are moving.
  • 3. The Respiratory System Ribs – to protect the chest Bronchioles Bronchi Trachea – has stiff rings of cartilage to prevent it collapsing Rib muscles – to raise and lower the ribs Lung Diaphragm – muscular sheet Alveoli (“air sacs”) – gas exchange takes place here
  • 4.  
  • 5.  
  • 6. Why are these so different? Explain why we need to take in oxygen and get rid of carbon dioxide.
  • 7. Breathing
    • Learning Objectives :
    • To understand the role of the respiratory system in humans.
    • To know how breathing links to cellular respiration.
    • To visualise how the lungs work using a model.

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