angina pectoris—is a symptom of an underlying heart condition. It means that the heart is not getting enough blood and as a result‚ not enough oxygen. This decrease of oxygen being delivered to the muscle of the heart happens if one or more coronary arteries are narrowed or blocked‚ a condition called atherosclerosis. This type of blockage may result in chest pain. And while angina does not usually damage the heart‚ and the pain might only last a few minutes. 1.10.1 Types of angina: 1. Stable angina:
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limited and unreliable data there is no significant increase in the heart rate or blood pressure of male adolescents when placed in this situation. INTRODUCTION As blood flows through all parts of the body‚ it exerts a pressure on the walls of the arteries carrying it. Blood pressure reflects this force through two numbers‚ the systolic and the diastolic. The systolic measures the pressure when the heart muscle contracts and the heart beats‚ while the diastolic measures the pressure when the heart
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In physiology and medicine‚ hypotension is abnormally low blood pressure‚ especially in the arteries of the systemic circulation. It is best understood as a physiological state‚ rather than a disease. It is often associated with shock‚ though not necessarily indicative of it. Hypotension is the opposite of hypertension‚ which is high blood pressure. Blood pressure is the force of blood pushing against the walls of the arteries as the heart pumps out blood. If it is lower than normal‚ then it is called low blood
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It is important to understand what coronary heart disease (CHD) is in order to alter a lifestyle to combat the disease. Poor cardiovascular health care habits can be highly detrimental to a person’s health. Poor habits have a direct relation to lack of knowledge on the subject‚ in this case CHD. An inadequate supply of information can lead the continuation of a poor cardiovascular lifestyle‚ thus drastically raising the risk for CHD. In elementary terms‚ what you do not know can hurt you. In 2013
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The disease was named after the scientists who discovered the disease in 1886‚ Dr. Jonathon Hutchinson and Dr. Hastings Gilford. Progeria occurs in 1 out of 4-8 million newborns. The name comes from the Greek word “Progeria”‚ which means “prematurely old”. This syndrome is an autosomal dominant condition‚ which means the gene has to be inherited from only one parent for the child to be affected. Progeria occurs when a child is born with a defective gene called LMNA. The gene LMNA is found in Chromosome
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keep it under control. Changing your lifestyle and getting regular blood pressure readings are important to keep it under control. Hypertension‚ also known as high blood pressure‚ is a very common aliment. It is a constant force of blood against artery walls and can cause a variety of health problems. About 70 million American adults have high blood pressure and only about 52% have it under control. According to the CDC‚ more than 360‚000 American deaths in 2013 included high blood pressure as a
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increases heart rate. E.It increases the rate of cross-bridge cycling in ventricular cells. 3. Which of the following statements concerning the capillaries is false?(2.0 Score ) A.Velocity of blood flow is slower in the capillaries than in the arteries. B.Increasing capillary hydrostatic pressure decreases the likelihood that filtration will occur. C.It is possible for a capillary to filter at its arterial end and absorb at its venous end. D.Discontinuous endothelium is more likely to be found
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Congenital (kon-JEN-ih-tal) heart defects are problems with the heart’s structure that are present at birth. These defects can involve: The interior walls of the heart The valves inside the heart The arteries and veins that carry blood to the heart or the body Congenital heart defects change the normal flow of blood through the heart. There are many types of congenital heart defects. They range from simple defects with no symptoms to complex defects with severe‚ life-threatening symptoms. Congenital
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system’s way of trying to increase heart rate to increase cardiac output.4 There is constriction of the veins to increase blood pressure and return more blood to the heart so it can have an increased stroke volume. There is also vasoconstriction of the arteries and redirected blood flow to vital organs as well. The kidneys will also retain fluid and sodium‚ which will lead to a further increase in blood pressure. All the extra work being done by the heart will cause hypertrophy of the myocardium causing
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Services‚ 2012). The failure can occur in on either side of the heart. In left-side heart failure‚ fluid backs up into the lungs‚ causing shortness of breath‚ due to the fact that the blood entering the left side of the heart comes from the pulmonary artery‚ and when the left ventricle cannot pump fluid out of the heart or when the left atrium cannot empty completely into the ventricle it backs up into the lungs. In right-side heart failure‚ fluid can back up into the abdomen‚ legs‚ and feet‚ causing
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