This fully-resourced lesson looks at the double, closed circulatory system as found in a mammal and considers how the pulmonary circulation differs from the systemic circulation. The engaging PowerPoint and accompanying resources have been designed to cover point 8.1 (a) of the CIE International A-level Biology specification
The lesson begins with a focus on the meaning of a double circulatory system and checks that students are clear in the understanding that the blood passes through the heart twice per cycle of the body. Beginning with the pulmonary circulation, students will recall that the pulmonary artery carries the blood from the right ventricle to the lungs. An opportunity is taken at this point to check on their knowledge of inhalation and the respiratory system as well as the gas exchange between the alveoli and the capillary bed. A quick quiz is used to introduce arterioles and students will learn that these blood vessels play a crucial role in the changes in blood pressure that prevent the capillaries from damage. When looking at the systemic circulation, time is taken to look at the coronary arteries and renal artery as students have to be aware of these vessels in addition to the ones associated with the heart. In the final part of the lesson, students are challenged to explain how the structure of the heart generates a higher pressure in the systemic circulation and then to explain why the differing pressures are necessary.
As a result of the constant reference to the heart, the blood vessels and the blood, students will be reminded that these are the components of the circulatory system
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Topics 7 & 8: Transport in plants & mammals (CIE A-level Biology)
This bundle contains 11 fully-resourced lessons which will engage and motivate the students whilst covering the following specification points in topics 7 and 8 of the CIE A-level Biology specification: TOPIC 7 * The structure of xylem vessel elements, phloem sieve tube elements and companion cells * The relationship between the structure and function of xylem vessel elements, phloem sieve tube elements and companion cells * Explain how hydrogen bonding of water molecules is involved with the movement in the xylem by cohesion-tension in transpiration pull and adhesion to cell walls * The pathways and mechanisms by which water and mineral ions are transported from the soil to the xylem and from roots to leaves * Assimilates move between sources and sinks between phloem sieve tubes * The mechanism by which sucrose is loaded into the phloem * The mass flow of phloem sap down a hydrostatic pressure gradient TOPIC 8 * The double, closed circulatory system of a mammal * The relationship between the structure and function of arteries, veins and capillaries * The role of haemoglobin in carrying oxygen and carbon dioxide * The significance of the oxygen dissociation curve of adult haemoglobin at different carbon dioxide concentrations * The external and internal structure of the heart * The cardiac cycle * The role of the SAN, AVN and Purkyne tissue in the initiation and conduction of the heart action The lesson PowerPoints and accompanying resources contain a wide range of tasks which include exam-style questions with mark schemes, discussion points and quiz competitions that will check on current understanding as well as making links to previously covered topics.
£15.00
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Topic 8: Transport in mammals (CIE International A-level Biology)
Each of the 7 lessons in this bundle are fully-resourced and have been designed to cover the content as detailed in topic 8 (Transport in mammals) of the CIE International A-Level Biology specification. The specification points that are covered within these lessons include: * The double, closed circulatory system of a mammal * The relationship between the structure and function of arteries, veins and capillaries * The role of haemoglobin in carrying oxygen and carbon dioxide * The significance of the oxygen dissociation curve at different carbon dioxide concentrations (Bohr effect) * The external and internal structure of the mammalian heart * The cardiac cycle, including the blood pressure changes during systole and diastole * The initiation and control of heart action The lessons have been written to include a wide range of activities and numerous understanding and prior knowledge checks so students can assess their progress against the current topic as well as be challenged to make links to other topics within this topic and earlier topics If you would like to see the quality of the lessons, download the arteries, veins and capillaries lesson as this is free
£9.00
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