This lesson describes the structures and functions of the components of the mammalian gaseous exchange system. The PowerPoint and accompanying resources have been designed to cover point 3.1.1 [c] of the OCR A-level Biology A specification and contains links to future topics such as transport in animals as well as prior knowledge checks of their recall of the content of previously covered modules.
The lesson is filled with a range of activities such as guided discussion periods, exam-style questions (with markschemes) and quiz competitions and these run alongside the slides containing the detailed A-level Biology content to cover the following features:
- The incomplete rings of cartilage, ciliated pseudostratified columnar epithelium and goblet cells in the trachea
- The narrowing airways of the primary, secondary and tertiary bronchi
- The elastic fibres and smooth muscle in the terminal and respiratory bronchioles and the change from simple columnar epithelium to simple cuboidal epithelium
- The large surface area to volume ratio and the simple squamous epithelium of the alveoli
- The pleural cavity and fluid of the lungs
When describing the production of mucus by the goblet cells in the trachea, time is taken to consider cystic fibrosis and the inheritance of this autosomal recessive disorder. Students will be supported in working out genotypes from a pedigree tree to prepare them for module 6.1.2 (Patterns of inheritance)
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Module 3: Exchange and transport (OCR A-level Biology A)
This bundle contains 18 detailed and engaging lessons which cover the following specification points in module 3 (Exchange and transport) of the OCR A-level Biology A specification: 3.1.1: Exchange surfaces * The need for specialised exchange surfaces * The features of an efficient exchange surface * The structures and functions of the components of the mammalian gaseous exchange system * The mechanism of ventilation in mammals * The mechanisms of ventilation and gas exchange in bony fish and insects 3.1.2: Transport in animals * The double, closed circulatory system in mammals * The structure and functions of arteries, arterioles, capillaries, venules and veins * The formation of tissue fluid from plasma * The external and internal structure of the heart * The cardiac cycle * How heart action is initiated and coordinated * The use and interpretation of ECG traces * The role of haemoglobin in transporting oxygen and carbon dioxide * The oxygen dissociation curve for foetal and adult haemoglobin 3.1.3: Transport in plants * The structure and function of the vascular systems in the roots, stems and leaves * The transport of water into the plant, through the plant and to the air surrounding the leaves * The mechanism of translocation As well as the detailed A-level Biology content of the PowerPoint slides, the resources contain a wide range of tasks including guided discussion points, exam-style questions and quiz competitions which will engage and motivate the students
£22.00
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Module 3.1.1: Exchange surfaces (OCR A-level Biology A)
This lesson bundle contains 5 lesson PowerPoints and together with their accompanying worksheets, they will engage and motivate the students whilst covering the following specification points in module 3.1.1 (Exchange surfaces) of the OCR A-level Biology A specification: * The need for specialised exchange surfaces * The features of an efficient exchange surface * The structures and functions of the components of the mammalian gaseous exchange system * The mechanism of ventilation in mammals * The mechanisms of ventilation and gas exchange in bony fish and insects Found interspersed within the detailed A-level Biology content in the slides are current understanding and prior knowledge checks and these are followed by displayed mark schemes to allow students to assess their progress. There are also differentiated tasks, guided discussion periods and quiz competitions that introduce key values and terms in a fun and memorable way If you would like to see the quality of lessons included in this bundle, then download the mammalian gaseous exchange system and ventilation and gas exchange in insects lessons as these have been uploaded for free
£6.50
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