How do we breath? Developing: Describe the function of the lungs. Secure: Explain how the structure of the lungs allows for efficient gas exchange. Exceeding: Analyse how the lungs are adapted to their function. Entrance Activity 1) Write the word equation for respiration 2) Lime water demonstration Tool Box – Key words Breathing Ventilation Mucus Cillia Diffusion Surface area
The Respiratory System Discuss the following topics with your table: Discussion Activity The Respiratory System Discuss the following topics with your table: What is the function of the lungs? How do the lungs perform their function??
Teacher Explanation Breathing
Learning Activity Parts of the lung Attempt to complete the respiratory labelling activity on the Respiratory System learning sheet. Then move on to question 2 and complete all of the sentences.
How do we breath? Developing: Describe the function of the lungs. Secure: Explain how the structure of the lungs allows for efficient gas exchange. Exceeding: Analyse how the lungs are adapted to their function. Entrance Activity 1) Write the word equation for respiration 2) Lime water demonstration Tool Box – Key words Breathing Ventilation Mucus Cillia Diffusion Surface area
Teacher Explanation Gas Exchange
Teacher Explanation Gas Exchange
Explain how gases are exchanged in the lungs. (4marks) Exam play Gas Exchange Explain how gases are exchanged in the lungs. (4marks) Success Criteria Use 5 of the key words in your explanation. Define the term oxygenated and deoxygenated. Describe the alveoli Draw a diagram of the alveoli to help with your explanation. Key Words Diffusion Inhale Exhale Oxygen Carbon dioxide Blood Capillaries RBC
How do we breath? Developing: Describe the function of the lungs. Secure: Explain how the structure of the lungs allows for efficient gas exchange. Exceeding: Analyse how the lungs are adapted to their function. Entrance Activity 1) Write the word equation for respiration 2) Lime water demonstration Tool Box – Key words Breathing Ventilation Mucus Cillia Diffusion Surface area
Comparing inhaled and exhaled air Data Analysis Comparing inhaled and exhaled air What are the differences between inhaled and exhaled air? Inhaled Air Exhaled Air Oxygen: 21% Oxygen: 16% Carbon dioxide: 0.04% Carbon dioxide: 4% Water vapour: small amount Water vapour: large amount What are the main differences? Explain why these changes have occured?
How are the alveoli adapted? Teacher Explanation How are the alveoli adapted? The alveoli have 4 key adaptations which allow for rapid gas exchange: Without these factors the alveoli wouldn’t be able to exchange gases as quickly as the body requires them. Large surface area One cell thick wall Large blood supply Large concentration gradient
Homelearning Key Word Cross Word Using the crossword template, create a crossword usng the key words we have learnt in this topic thus far. This will be used next lesson to test your partners knowledge.
How do we breath? Developing: Describe the function of the lungs. Secure: Explain how the structure of the lungs allows for efficient gas exchange. Exceeding: Analyse how the lungs are adapted to their function. Entrance Activity 1) Write the word equation for respiration 2) Lime water demonstration Tool Box – Key words Breathing Ventilation Mucus Cillia Diffusion Surface area
Plenary Summary Sheet Complete the summary sheet for todays lesson. Then check your answers with your partner.