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GCSE PE Lesson 4: Respiratory System 29/04/2017 Starter activity Write down everything that you know about breathing (respiration) on the whiteboard Extension How does respiration differ during exercise compared to at rest? Why? Learning Challenges ➔ Remember the structure of the respiratory system ➔ Understand the function of the respiratory system and how gaseous exchange takes place Activity 1: Respiratory system structure and function Complete worksheet 1.8 during the video (raise your hand to pause the video) Create a diagram to help you to remember and understand the function of the respiratory system Complete worksheet 1.9 20 minutes Extension Can you explain the structure and function in under 2 minutes? Key terms Cardio-respiratory system The name used to describe the respiratory system and cardiovascular system working together Gaseous exchange The process where oxygen from the air in the alveoli moves into the blood in the capillaries, while carbon dioxide moves from the blood in the capillaries into the air in the alveoli. Haemoglobin The protein found in red blood cells that transports oxygen (as oxyhaemoglobin) and carbon dioxide around the body. Oxyhaemoglobin A chemical formed when haemoglobin bonds to oxygen. Alveoli Small air sacs in the lungs where gaseous exchange takes place. Capillaries A network of microscopic blood vessels. They are only one cell thick. Diffusion pathway The distance travelled during diffusion. The diffusion pathway is short in gaseous exchange. Plenary Starter: Add to the whiteboard something that you have learned about breathing (respiration) today Main: Explain the respiratory system in less than 2 minutes Learning Challenges ➔ Remember the structure of the respiratory system ➔ Understand the function of the respiratory system and how gaseous exchange takes place Home Learning ● Fourth person in the register adds the key terms to the Moodle glossary ● Read pages 17-18 of the textbook Complete worksheets 1.10 and 1.11