![]() ![]() Each of the major pumping chambers of the heart ejects approximately 70 mL blood per contraction in a resting adult. If one assumes an average rate of contraction of 75 contractions per minute, a human heart would contract approximately 108,000 times in one day, more than 39 million times in one year, and nearly 3 billion times during a 75-year lifespan. ![]() The vital importance of the heart is obvious. Trace the pathway of oxygenated and deoxygenated blood thorough the chambers of the heart.Identify the veins and arteries of the coronary circulation system.Compare systemic circulation to pulmonary circulation.Relate the structure of the heart to its function as a pump.Identify the tissue layers of the heart.Describe the internal and external anatomy of the heart.Describe the location and position of the heart within the body cavity.In the first part of the resource, various aspects of cardiac biology are described and these include the use of magnetic resonance spectroscopy imaging techniques, studying skeletal muscle cells in vitro and the implanting of biomedical devices.By the end of this section, you will be able to: Produced by the Biotechnology and Biological Sciences Research Council (BBSRC), these materials help students to understand more about how the heart works and also includes a step-by-step guide to dissecting a heart obtained from a butcher. Quality Assured Category: Science Publisher: Biotechnology and Biological Sciences Research Council (BBSRC) - UKRI Suggest ways that a person could help reduce their risk of having a heart attack.Describe blood clotting and how this helps to prevent disease.How does the pressure change in each of the chambers during one heartbeat?.Describe the sequence of events in a cardiac cycle (heartbeat).Explain why humans have a double circulatory system.Compare and contrast the structures and functions of arteries, veins and capillaries.Describe the role of each of the components in the blood.Why do these materials need to be carried?.What materials does blood transport throughout the body.Different students could be asked to complete specific tasks to answer in class having worked through the website for homework, tasks could include: These sections could be used for independent learning/homework activities. In each section there is information and a brief self-test quiz. Prevention and treatment of cardiovascular disease. ![]() This interactive website has a number of sections which are relevant to this topic area of GCSE Biology, these include: Further information is provided in our Health and Safety guidance.ĪBPI interactive website *suitable for home teaching* eLibrary users are responsible for ensuring that any activity, including practical work, which they carry out is consistent with current regulations related to Health and Safety and that they carry an appropriate risk assessment. Do NOT follow suggestions which conflict with current advice from CLEAPSS, SSERC or recent safety guides. Whilst this list provides a source of information and ideas for experimental work, it is important to note that recommendations can date very quickly. The valves in the heart chambers are an important feature of the circulatory system so it is worth spending some time ensuring students appreciate the role that the valves play in the system, they should be a feature of any dissection. There os often a misconception that it is the vessel which supply the heart which are blocked It is important when discussing/demonstrating the structure of the heart (for example in dissections) that students are shown the coronary arteries that supply the cardiac muscle, so that they appreciate that it is the blockage of these arteries that can cause heart attacks. Asking students to give a two minute presentation on this (select different students at the start of different lessons), will help them articulate this Students often find it difficult to explain what is meant by double circulation, when delivering this topic ensure that students are able to clearly explain how blood is pumped to the lungs and body on each circuit and that it goes through the heart twice in each circuit. Students need to know the components of blood and be able to explain how red blood cells, white cells, platelets and plasma are adapted to their functions. They will need to explain how the structure of the heart and blood vessels are adapted to their functions. Students need to be able to describe the human circulatory system, including the relationship with the gaseous exchange system. ![]()
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