In his thorough and thoughtful exploration of the new biology, sayer ji illuminates. Alevel human biology revision science section on cardiovascular disease, its causes and effects. For example, of the 50 million americans who suffer from high blood pressure the leading contributor to heart disease only 35% know they have it. Control of heart rate questions aqa ocr edexcel author. The specification in this catalogue, including limitation price, format, extent, number of illustrations and month of publication, was as accurate. Cardiovascular disease covers a range of heart related problems see below for examples. Heart has to work harder to force blood through narrowed vessels blood pressure increases. She has trained at the mayo clinic, in molecular biology, cardiology and echocardiography to develop an expertise which is translational in the approach towards valvular medicine. Heart anatomy focuses on the structure and function of the heart. Understanding heart disease by arthur selzer university of california press, 1992 written in clear, accessible language, this book presents a balanced picture of how heart diseases are recognized and managed. Aqa a level biology heart disease flashcards quizlet. Aqa gce biology as award 1411 unit 1 the heart heart. It is often the underlying cause that leads to heart disease. Arteries supplying the heart become narrowed and the blood supply to cardiac tissues is reduced.
Heart failure is the end result of many diseases affecting the heart, but is most commonly associated with ischaemic heart disease, valvular heart disease, or high blood pressure. Coronary heart disease is a major cause of death in the uk and much of the rest of the world. Rob myers shows how to take control of the condition. Home a level and ib study tools biology health and disease infectious disease as biology health and disease infectious disease as biology 3. Less common causes include various cardiomyopathies. Rajamannan, md has been studying the cellular biology of valvular heart disease since 1987. Aqa gce biology as award 1411 unit 1 the heart unit 1 biology and disease the heart practice exam questions. Disease may have a single cause for example, malaria or be multifactorial, such as heart disease. Heart disease is responsible for more than 37% of all deaths and is the leading cause of death in people over 65. This is the build up of fatty material in the walls of arteries. Example 1 chd or coronary heart disease is a term given to problems with the arteries of the heart itself. The anatomy of the heart, its structures, and functions. Selzers book includes information vital to anyone confronting heart problems and cardiac emergencies.
The heart is the organ that helps supply blood and oxygen to all parts of the body. Risk factors associated with chd are diet, blood cholesterol, cigarette smoking and high blood pressure. Alevel human biology revision science section on cardiovascular disease. Disease is a disorder or malfunction of the mind or body, which destroys good health. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Unit 1 biology and disease the heart practice exam questions.
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