Human biology open textbook library center for open education. The heart and heart disease aqa alevel biology revision. The heart is the first organ to form in a developing embryo, and all subsequent life processes depend on its proper function. Valvular heart disease may cause breathlessness, blackouts, or chest pain, but may be asymptomatic and only detected on a routine examination by hearing abnormal heart sounds or a heart murmur. An infectious disease is a disease resulting from the presence of pathogens including viruses, bacteria, fungi, protozoa and multicellular parasites. Both smoke that the smoker inhales through the filter and. Aqa a level biology heart disease flashcards quizlet.
Heart dissection pictures required for rp5 in biology aqa a level. Heart disease is a practical health guide that simplifies this diseases biology and physiology and clearly explains the medial concepts and jargon often used by doctors in diagnosis and treatment. Coronary heart disease is where the arteries supplying the heart with oxygenated blood and nutrients coronary arteries are narrowed causing the blood supply to reduce. The circulatory system blood is pumped away from the heart at high pressure in arteries, and returns to the heart at low pressure in veins. Its usually associated with a buildup of fatty deposits inside the. Find the relevant section of the textbook use the index, online materials and class notes.
A complete, differentiated revision lesson based on the new aqa b4 sow. List of books and articles about coronary heart disease. A textbook of cardiovascular medicine, single volume zipes md, douglas p. Health and disease health can be defined as a persons physical, mental and social condition. From biology to clinical practice links the most important basic concepts of atherosclerosis pathophysiology to treatment management of coronary artery disease. Pathophysiology, molelcular biology and clinical management. But a range of genetic and environmental factors can lead to its failure. Zipes, and peter libby, this dynamic, multimedia reference helps you apply the most recent knowledge in molecular biology. The heart 54 coronary heart disease 58 the digestive system 60 cholera 67 disease lifestyle and disease 68 defence against disease 72 immunisation 80 monoclonal antibodies 81 appendices 1 mathematical requirements 83 2 the unit 1 exam 86 these notes may be used freely by a level biology students and teachers.
This is the build up of fatty material in the walls of arteries. Coronary heart disease death rates differ also within countries, and between socioeconomic stratas in the uk, poor people, certain ethnic groups and men are more at risk. Has the ability to repair itself, to fight off attacking microorganisms and adapt to a variety of situations often time microorganisms enter the body and attempt to infect the body causing a disease a disease is a condition where an organism experiences impaired function often with detrimental symptoms. Health can be defined as a persons physical, mental and social condition. A level biology transition unit amazon web services. This category contains pages that are part of the alevel biology book. Good hygiene and the access to medical and social care are also important. Alevel biologyhuman health and diseaseinfectious diseases. Alevel human biology revision science section on cardiovascular disease. The heart and blood vessels revision complete lesson. Students will find that this textbook offers a strong introduction to human biology. Heart has to work harder to force blood through narrowed vessels blood pressure increases.
This website and its content is subject to our terms and conditions. Its time for a quiz on the most important organ in the human body. Topics include tissue engineering, genome editing, stem cells, cardiomyocyte reprogramming, chemically modified rna, and next. In the developed world, valvular heart disease is most commonly caused by degeneration secondary to old age, but may also be caused by infection of the heart valves endocarditis. This awardwinning text has been completely updated, providing a superior multimedia reference for every aspect of this. Arteries supplying the heart become narrowed and the blood supply to cardiac tissues is reduced. Scar tissue is thicker snd less elastic than normal lung tissue. The lesson revisits the blood cells, blood vessels, heart structure, coronary heart disease and statins and stents. Gcse science biology 91 cardiovascular diseases youtube. Heart dissection labelled for required practical 5 aqa biology unit 1. Medically heart disease is called cardiovascular disease. Comprehensive coverage starts with the basic pathophysiologic mechanisms of the disease, including molecular and genetic mechanisms, cells interaction and inflammation.
Cigarette smoke is composed of over 4000 different chemicals, many of which are toxic. Cardiovascular disease cvd is a general term for conditions affecting the heart or blood vessels. The fact sheets and handouts below can help your patients understand the risk for heart disease and the conditions that lead to it. Several books on heart failure attempt to provide these links, ranging from small. As level aqa biology lung disease flashcards quizlet. Coronary heart disease is a major cause of death in the uk and much of the rest of the world. Written by expert teachers for the cie 06100970 igcse biology syllabus. This means that the heart has to work harder to force blood through the narrowed vessels therefore blood pressure increases. Random quote im sure the universe is full of intelligent life. Find all the books, read about the author, and more.
It is often the underlying cause that leads to heart disease. A textbook of cardiovascular medicine, single volume, 10e 10 by douglas l. The human circulatory system is a double circulatory system. The disease is because of fault in a gene coding for a channel protein that is meant to allow chloride ions to flow out of cells, and since chloride ions take water with them this presents a problem. Using detailed tables, sidebars and diagrams, heart disease provides comprehensive, accurate, safe and uptodate information for patients and their families. A level human biology revision science section on cardiovascular disease. Welcome to alevel biology at enfield county school for girls congratulations.
Angina, heart attack and heart failure and are all clinical forms of coronary heart disease. All being well with gcse results, you will be embarking on a rewarding and exciting. Our hearts are what keep our bodies moving and grooving throughout our daily lives, pumping blood to all of our vital organs and keeping them functioning. Cardiovascular disease can refer to a number of conditions. Its usually associated with a buildup of fatty deposits inside the arteries atherosclerosis and an increased risk of blood clots. Alevel biologyhuman health and diseasesmoking and disease. Biology a level summer work 2019 long road sixth form college. A textbook of cardiovascular medicine, single volume. Ideal for cardiologists who need to keep abreast of rapidly changing scientific foundations, clinical research results, and evidencebased medicine, braunwalds heart disease. But the disease does not have to progress that way. Like a time bomb ticking away, hypertension builds quietly, gradually, placing unbearable strain on the body until it explodesin heart attack, stroke, kidney failure, arterial disease, even death. Rheumatic heart disease is a chronic heart condition that is caused by rheumatic fever. Your own old gcse science biology exercise books head start to as biology published by cgp.
For instance, if the presence of smoking alone doubles the level of risk, the. To enjoy good health, a person needs proper shelter, nutrition, exercise, sleep and rest. This can result in the infection or exposure to substances like asbestos or dust. Chapter 4 the pathophysiology of cardiac hypertrophy and heart failure. The biology of heart disease cold spring harbor perspectives in medicine kenneth r. Biology of disease is a text for undergraduate students who are intending to pursue a career in the medical support services.
A level biologyhuman health and diseasesmoking and disease. Risk factors associated with chd are diet, blood cholesterol, cigarette smoking and high blood pressure. You might know someone who has cardiovascular disease because more than 60 million americans have some form of it. Cellular and molecular pathobiology of cardiovascular disease. The lungs are less able to expand and so cant hold as much air as normal so the tidal volume is reduced.
Cystic fibrosis is an inherited disease, and is the most common in britain. Any condition that affects the heart or its function results in heart diseases. Cardiovascular diseases how tobacco smoke causes disease. Alevel biologyhuman health and diseaseintroduction. It is also an ideal reference for biomedical scientists and medical technologists. Arteries supplying the heart become narrowed and the blood supply to cardiac tissues is reduced heart has to work harder to force blood through narrowed vessels. Read, highlight, and take notes, across web, tablet, and phone. Scool revision summary scool, the revision website. Coronary heart disease the circulatory system gcse. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq.
Blood needs to pass through capillaries to reach the lungs, in order to present a large surface area for gas exchange. These resources can also help them find ways to make healthy lifestyle changes. Written in an engaging manner, this book will be useful for students needing a broad overview of the biological basis of disease. Relative risk and excess death rate for coronary heart disease among men, by age group. Heart and blood vessel disease also called heart disease includes numerous problems, many of which are related to a process called atherosclerosis atherosclerosis is a condition that develops when a substance called plaque builds up in the walls of the arteries. Disease is a disorder or malfunction of the mind or body, which destroys good health. Discover librarianselected research resources on coronary heart disease from the questia online library, including fulltext online books, academic journals, magazines, newspapers and more. Free biology 2e textbook available for download openstax.
Study biology online for free by downloading openstaxs college biology 2e book and using our accompanying online resources including a. Powered by create your own unique website with customizable templates. Arteriosclerosis, thrombosis, and vascular biology. Cardiovascular disease covers a range of heart related problems see below for examples. Lifestyle, health and risk specification peoples perceptions of risks are often different from the actual risks, including underestimating and overestimating the risks due to diet and other lifestyle factors in the development of heart disease.
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