cause of death worldwide)) • CVD are diseases of the heart and blood vessels o includes atherosclerosis‚ heart attack and stroke • Narrowing of blood vessels as they are filling up with plaque Function of the heart • 4 chambers/valves controlled by leaflets • Coronary Artery Disease (CAD) caused by the building up of plaque leading to a heart attack • 2 pumps in one Definitions: Atherosclerosis: the clogging and narrowing of the arterial walls with deposits of fat‚ cholesterol and other
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range of diseases such as arteriosclerosis‚ atherosclerosis and coronary heart disease. Diet plays a vital part in the prevention and control of these diseases however other manageable factors such as smoking and physical inactivity also contribute to the diseases if not controlled correctly. However corrective action or cession can reduce the risk of these conditions. There are two main types of cardiovascular diseases‚ arteriosclerosis and atherosclerosis. Arteriosclerosis is where lipid deposits
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cholesterol circulating in the blood‚ it can slowly build up within the walls of the arteries feeding the heart and brain. Together with other substances it can form plaque‚ a thick‚ hard deposit that can clog those arteries. This condition is known as atherosclerosis. The formation of a clot in the region of this plaque can block the flow of blood to part of the heart muscle and cause a heart attack. If a clot blocks the flow of blood to part of the brain‚ the result is a stroke. A high level of LDL cholesterol
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known as Coronary Heart Disease‚ is the most common heart disease. In both men and women‚ it is the leading cause of death in the United States. Coronary arteries carry blood to the heart. CAD is caused by a thickening of these arteries‚ called atherosclerosis. Plaque‚ a substance containing cholesterol and other fatty substances‚ builds up inside the thickened walls of the arteries‚ which slows or blocks blood flow to the heart. In result‚ the heart cannot receive the proper oxygen or blood that it
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than a million Americans suffer a heart attack every year‚ and almost half a million die‚ according to the American Heart Association. A heart attack often is the first symptom of coronary artery disease. The blockage usually is caused by atherosclerosis‚ the build-up of plaque in the artery walls‚ and/or by a blood clot in a coronary artery. A slow buildup of this plaque may almost block one of your coronary arteries. The cause of the heart is not always known. Heart attacks may occur when you
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this report will only cover a cerebral one. Intracranial aneurysms are classified as dissecting‚ saccular‚ and fusiform. There are many causes of intracranial aneurysms. Some of the most common causes would include fibromuscular dysphasia‚ atherosclerosis‚ and arteriovenous malformation. Some that are less common‚ but do occur would include drugs‚ infection‚ and trauma. Dissecting aneurysms occur when blood enters a vessel wall through a rupture in the intima‚ which is the inner lining of vein
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coronary heart disease? Retrieved from http://www.nhlbi.nih.gov. Porth‚ C. (2005). Pathophysiology : concepts of altered health states. Philadelphia: Lippincott Williams & Wilkins. Suri‚ J.‚ Kathuria‚ C. & Molinari‚ F. (2010). Atherosclerosis Disease Management. Berlin:
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REVIEW SHEET EXERCISE 5 Cardiovascular Dynamics NAME: LAB TIME/DATE: Vessel Resistance The following questions refer to Activity 1: Studying the Effect of Flow Tube Radius on Fluid Flow. 1. At which radius was the fluid flow rate the highest? 6.0 mm 2. What was the flow rate at this radius? 1017.2 mmHg 3. Describe the relationship between flow rate and radius size. The relationship between the flow rate and the radius size is direct with the formula flow rate=radius to the fourth
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as ’atherosclerosis’ and the fatty deposits are called ’atheroma’. Causes of coronary heart disease Coronary heart disease (CHD) is usually caused by a build-up of fatty deposits on the walls of the coronary arteries. The fatty deposits‚ called ’atheroma’‚ are made up of cholesterol and other waste substances. The build-up of atheroma on the walls of the coronary arteries makes the arteries narrower and restricts the flow of blood to the heart. This process is called ’atherosclerosis’.
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cardiovascular diseases. To function effectively‚ the heart needs a constant supply and flow of blood. Coronary heart disease is the term that describes conditions caused when the blood flow is interrupted or slowed. The most common cause of this is atherosclerosis; a build up of fatty deposits and plaque in the arteries‚ or blot clots. Depending on the sever ness of such a blockage‚ it can cause anything from minor chest pain to a fatal heart attack. This can damage and weaken the heart permanently even
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