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What GCSE and A-level students say after revising with MathsGenie.
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Study AQA GCSE Biology 2.2.4 Coronary heart disease: a non-communicable disease for Foundation and Higher tier. Use the worksheets, lessons, revision guides, and flashcards below to learn the topic, practise key skills, and check your understanding. These resources are matched to the AQA GCSE Biology (8461) specification.
In coronary heart disease layers of fatty material build up inside the coronary arteries, narrowing them. This reduces the flow of blood through the coronary arteries, resulting in a lack of oxygen for the heart muscle. Stents are used to keep the coronary arteries open. Statins are widely used to reduce blood cholesterol levels which slows down the rate of fatty material deposit. • In some people heart valves may become faulty, preventing the valve from opening fully, or the heart valve might develop a leak. Students should understand the consequences of faulty valves. Faulty heart valves can be replaced using biological or mechanical valves. • In the case of heart failure a donor heart, or heart and lungs can be transplanted. Artificial hearts are occasionally used to keep patients alive whilst waiting for a heart transplant, or to allow the heart to rest as an aid to recovery.