A Level Biology Revision Lesson 131:
Cardiovascular System (CVS) An Overview.
Task 1. Check Where this Lesson fits into your Exam Specification!
Task 2. Watch the Revision Notes Lesson in Full.
Task 3: Download and complete the accompanying cardiovascular system work booklet and revision notes.
Check Your Spec!
★ AQA A Level Biology Specification Reference: - The general pattern of blood circulation in a mammal. Names are required only of the coronary arteries and of the blood vessels entering and leaving the heart, lungs and kidneys. The gross structure of the human heart. Pressure and volume changes and associated valve movements during the cardiac cycle that maintain a unidirectional flow of blood. The structure of arteries, arterioles and veins in relation to their function. The structure of capillaries and the importance of capillary beds as exchange surfaces. The formation of tissue fluid and its return to the circulatory system.
★ CIE A Level Biology Specification Reference: - 8 Transport in mammals. 8.1 The circulatory system: The mammalian circulatory system consists of a pump and many blood vessels. State that the mammalian circulatory system is a closed double circulation consisting of a heart, blood vessels and blood. Observe and make plan diagrams of the structure of arteries, veins and capillaries using prepared slides and be able to recognise these vessels using the light microscope. Explain the relationship between the structure and function of arteries, veins and capillaries.
★ Edexcel A Level Biology (Biology A – Salters-Nuffield) Specification Reference: - Topic 1: Lifestyle, Health and Risk. This topic builds on students’ knowledge and understanding of the functioning of the circulatory system and the importance of lifestyle choices to health. The role of diet and other lifestyle factors in maintenance of good health is considered with particular reference to the heart and circulation and to cardiovascular disease (CVD). 1.1 Understand why many animals have a heart and circulation (mass transport to overcome limitations of diffusion in meeting the requirements of organisms). 1.3 Understand how the structures of blood vessels (capillaries, arteries and veins) relate to their functions. 1.4 i) Know the cardiac cycle (atrial systole, ventricular systole and cardiac diastole) and relate the structure and operation of the mammalian heart, including the major blood vessels, to its function. ii) Know how the relationship between heart structure and function can be investigated practically.
★ Edexcel A Level Biology (Biology B) Specification Reference: - Topic 4: Exchange and Transport. 4.4 Circulation i) Know the structure of the heart, arteries, veins and capillaries. ii) Understand the advantages of a double circulatory system in mammals. iii) Know the sequence of events of the cardiac cycle.
★ OCR A Level Biology (Biology A) Specification Reference: - 3.1.2 Transport in animals. Learners should be able to demonstrate and apply their knowledge and understanding of: the need for transport systems in multicellular animals. The different types of circulatory systems. To include single, double, open and closed
circulatory systems in insects, fish and mammals. The structure and functions of arteries, arterioles, capillaries, venules and veins. The external and internal structure of the mammalian heart. The dissection, examination and drawing of the external and internal structure of the mammalian heart. The cardiac cycle: To include the role of the valves and the pressure changes occurring in the heart and associated vessels.
★ OCR A Level Biology (Biology B) Specification Reference: - 2.2.2 Transport systems in mammals: Learners should be able to demonstrate and apply their knowledge and understanding of: the importance of the closed double circulatory system. the structure and functions of arteries, arterioles, capillaries, venules and veins. transverse sections of arteries, veins and capillaries as observed using a light microscope.
★ WJEC A Level Biology Specification Reference: -Requirements for Life: 2. Adaptations for transport. Learners should be able to demonstrate and apply their knowledge and understanding of: Mammal double circulatory system. (b) the mammalian circulatory system including the structure and function of heart and blood vessels and the names of the main blood vessels associated with the human heart. The cardiac cycle and the maintenance of circulation to include graphical analysis of pressure changes.