Coronary heart disease a-level biology notes download

Global atlas on cardiovascular disease prevention and control pdf 1st ed. Calculate the difference in blood flow between person. Study 114 as exam questions flashcards from isabelle g. As exam questions a level biology with sale and robinson. Intake of saturated and trans unsaturated fatty acids and. This is a disease of the coronary arteries, which branch from the aorta to supply the heart muscle. Nowadays coronary heart disease chd, also known as coronary arteries disease, is one of major killer diseases in many countries. Coronary heart disease the circulatory system gcse. Scool revision summary scool, the revision website. Congenital heart disease in the older adult circulation. This makes it difficult for the heart to receive the extra nutrients and oxygen it requires during exercise.

The coronary arteries supply blood to the heart muscle. 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. The heart muscle is supplied with freshly oxygenated blood from the coronary arteries. Exercise training exerts many beneficial changes at the cellular and molecular level. Human coronary arterioles hcas were dissected from pieces of the atrial appendage obtained at the time of cardiac surgery and cannulated for the measurement of internal diameter with videomicroscopy. The heart is coneshaped, about the size of a fist, and is located in the centre of the thorax, between the lungs, directly behind the sternum breastbone.

Lack of sufficient blood is associated with a lack of oxygen, also called ischemia. Biology notes all in one here is a pdf file with all biology notes for you to download. If you are teaching any a level biology now, much of. Thyrotropin levels and risk of fatal coronary heart disease.

Free 37 hannahradford coronary heart disease new gcse. Cardiovascular disease affects the heart and blood vessels. Factors effecting coronary heart disease chd has two principal forms angina and heart attacks myocardial infarction. Hgs biology alevel notes ncm711 as biology unit 1 page 12 protein structure polypeptides are just strings of amino acids, but they fold up and combine to form the complex and welldefined threedimensional structure of working proteins.

This animation will show you how risk factors like high cholesterol, high blood pressure and smoking can lead to blocked arteries blood vessels. Until recently the relation between obesity and coronary heart disease was viewed as indirect, ie, through covariates related to both obesity and coronary heart disease risk, 12 including hypertension. Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. The heart is tilted so that the base is tilted to the left.

Department of pathogen biology, guangdong provincial key laboratory. Gcse f biology assessment and qualifications alliance. Flashcards for the check your notes sheets snab total cards. Arteries supplying the heart become narrowed and the blood supply to cardiac tissues is reduced. There are lifestyle factors that can be taken to reduce the risk of forming atheroma. Chd develops when cholesterol layers build on the walls of the coronary arteries, partially blocking the path of blood, thus this tissue of the heart is not supplied with oxygen. Ppt cardiovascular disease powerpoint presentation. What are the factors that affect the incidence of coronary heart disease. Data sources medline, embase, cochrane central registry of controlled.

There are many types, including coronary artery disease, angina, and heart failure. Coffee consumption and the risk of coronary heart disease and. Cvd includes coronary artery diseases cad such as angina and. The heart is a hollow muscular organ that lies in the middle of the chest cavity. Objectives to study prospectively the relation of coffee drinking with fatal and nonfatal coronary heart disease chd and allcause mortality and to perform a.

Explains what coronary heart disease is and how it can lead to a heart attack. More males suffer from coronary heart disease than females more younger people suffer from coronary heart disease than older people. We examined the mechanism of adenosineinduced vasodilation in coronary arterioles from patients with heart disease. While recognising the importance of the public health strategy embodied in the governments health of the nation document, which outlines a policy seeking to reduce morbidity and mortality from chd and other atherosclerotic disease in the population,6 it is essential that specialists and general. It describes the buildup of plaques also known as fatty deposits in the inside of arteries that cause the disorder to be. Home learning activity starter activity and worksheets adapted from a.

The coronary arteries are the blood vessels that supply oxygen and blood to the heart. Coronary heart disease is a blanket term which describes all types of heart disease caused by blockage of the arteries that supply blood to the heart. Cell division cell types cell ultrastructure enzymes fast, specific catalysts gene technology genes, dna, rna large molecules plasma. The pack is also available to buy from the preproom. Designed to meet the requirements of the qca as and a level subject criteria, this new specification continues the best features of the two current aqa specifications, biology a and biology b. Coronary heart disease, clogged arteries and atherosclerosis. The term of atherosclerosis is of ancient greek origin where athero refers to mush and sclerosis means the hardening. Objectives and priorities for coronary heart disease prevention in clinical practice. Atherosclerosis is a complex disorder that refers to the hardening of the arteries due to the accumulation of lipids particularly cholesterol. The biological basis and risk factors for coronary heart disease. Cardiovascular disease cvd is a class of diseases that involve the heart or blood vessels. Marker, initial rise, peak, return to normal, notes.

Coronary artery disease cad is the most common cause of mortality in the developed world. Importantly, with age, and in this older achd population, management will need to encompass acquired heart disease. Tuesday 7 june 2016 afternoon as gce human biology f22201advance notice growth, development and disease for issue on or after. A question on coronary heart disease and blood pressure as aqa biology. The coronary arteries are the blood vessels that supply oxygen and blood to. Alevel biologyhuman health and diseasesmoking and disease. Instant access to hundreds of a level biology teaching resources 379 factsheets, powerpoints, questions by topic for aqa, edexcel, ocr and wjec biology as and a levels. Use the mark schemes to check answers once youve had a good stab at the questions. Objectives and priorities for coronary heart disease. Heart has to work harder to force blood through narrowed vessels blood pressure increases. A level biology topic 1 lifestyle, health and risk. Epidemiology risk factors pathogenesis spectrum prevention. Prevention of cardiovascular disease world health organization. This section will examine the cause of these myocardial infarctions doctor speak for heart attack.

The heart is labelled as if it was in the chest so what is your left on a diagram is actually the right hand side and vice versa. Ppt cardiovascular disease powerpoint presentation free to download id. It is enclosed in the pericardium, which protects the heart and facilitates its pumping action. Coronary heart disease chd, also called coronary artery disease cad and atherosclerotic heart disease, is the end result of the accumulation of. Revision notes designed for as and a level biology students. Percentage of total coronary heart disease deaths by age group, race.

A level biology resources aqa, ocr, edexcel and wjec. Revision website designed for as and a level biology students. Below are separately downloadable sections of the unit 1 revision pack. The adobe flash plugin is needed to view this content. Atherosclerosis causes, symptoms, a level biology notes. Written by expert teachers for the cie 06100970 igcse biology syllabus. Coronary heart disease new gcse teaching resources. Gender differences in coronary heart disease request pdf. Coronary heart disease chd, or coronary artery disease, develops when the coronary arteries become too narrow. These may become blocked by a buildup of fatty plaques. The cause of most cardiovascular disease is a buildup of atheroma a fatty deposit within the inside lining of arteries. Replying is easier on our app click here to download for free. The heart and heart disease aqa alevel biology revision. They have thin walls which receive blood from veins.

The source of the virus and the pathogenesis of this disease are still unconfirmed. Coronary artery disease angina pectoris atherosclerosis. Coronary heart disease death rates differ also within countries, and between socioeconomic stratas in the uk, poor people, certain ethnic groups and men are. Igcse biology past year papers 0610 download twins. Make sure that you look at the revision material and then attempt questions. The coronary arteries are those which supply the heart tissues with blood, they branch from the aorta. Heart activity can be monitored by using an ecg, measuring pulse rate or listening to the sounds of valves closing using a stethoscope. The vertebrate heart consists of different cell types such a cardiomyocytes, cardiac fibroblasts, endothelial. Anthocyanins in cardiovascular disease advances in.

In the general population, mortality rates for all cardiovascular disease, coronary heart disease, and stroke are, respectively, 10, 9, and times higher in people. The causes of coronary heart disease biology essay introduction. According to the who, cvd is caused by disorders of the heart and blood vessels and includes coronary heart disease chd. Chd develops as a result of injury or damage to the inner layer of a coronary artery. See more ideas about biology diagrams, biology, hormones. There are many causes of heart disease but the condition which most people associate with this disease is the sudden onset of a heart attack. Mechanism of vasodilation to adenosine in coronary. This damage causes fatty deposits of plaque to build up at the injury site. New gcse 2016 coronary heart disease previously artificial or real based on the aqa specification this lesson covers. If atherosclerosis of these vessels occurs, then the heart has to work harder and blood pressure rises. Clarify the effect of physical movement on the heart rate when doing the igcse biology past year papers argue the roles of diet and exercise in the prevention of coronary heart disease describe ways in which coronary heart disease may be treated, limited to drug treatment with aspirin and surgery stents, angioplasty and bypass. Powered by create your own unique website with customizable templates. Coronary artery disease cardiology explained ncbi bookshelf.