What is Cholesterol?Cholesterol is a sterol (a combination steroid and alcohol). Cholesterol is a lipid found in the cell membranes of all tissues, and it is transported in the blood plasma of all animals. Because cholesterol is synthesized by all eukaryotes, trace amounts of cholesterol are also found in membranes of plants and fungi.The name originates from the Greek chole- (bile) and stereos (solid), and the chemical suffix -ol for an alcohol, as researchers first identified cholesterol in solid form in gallstones by Francois Poulletier de la Salle in 1769. However, it is only in 1815 that chemist Eugene Chevreul named the compound "cholesterine".[2]Most of the cholesterol is synthesized by the body and some has dietary origin. Cholesterol is more abundant in tissues which either synthesize more or have more abundant densely-packed membranes, for example, the liver, spinal cord and brain. It plays a central role in many biochemical processes, such as the composition of cell membranes and the synthesis of steroid hormones. Cholesterol is insoluble in blood, but is transported in the circulatory system bound to one of the varieties of lipoprotein, spherical particles which have an exterior composed mainly of water-soluble proteins. The main types, low-density lipoprotein (LDL) and high-density lipoprotein (HDL) carry cholesterol from and to the liver.According to the lipid hypothesis, abnormally high cholesterol levels (hypercholesterolemia) and abnormal proportions of LDL and HDL are associated with cardiovascular disease by promoting atheroma development in arteries (atherosclerosis). This disease process leads to myocardial infarction (heart attack), stroke and peripheral vascular disease. As high LDL contributes to this process, it is termed "bad cholesterol", while high levels of HDL ("good cholesterol") offer a degree of protection. The balance can be redressed with exercise, a healthy diet, and sometimes medication. |
| body position on blood pressure |
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Chiropractic & Osteopathy | Abstract | 1746-1340-15-19 | Effects Effects of body position on autonomic regulation of cardiovascular function in young, work of others), blood pressure was higher in the prone posture. CAT.INIST Background Nocturnal blood pressure readings may be influenced by body position because of variation in the vertical distance between heart and cuff level. Experiment HC-1: Blood Pressure, Peripheral Circulation, and Body In addition to. learning to measure the blood pressure and comparing. blood pressures from different subjects, the effects of. cuff location, body position, Arm Position May Alter Blood Pressure Readings 1/28/04 Researchers found that blood pressure measured with the arm perpendicular to the body was much lower than with the arm in a parallel position. Blood Pressure, Peripheral Circulation and Body Position In addition to measuring the blood pressure from all willing participants, the effects of cuff location, body position, and arm position will be examined. Recommendations for blood pressure measurement in humans and Effects of Body Position. Blood pressure measurement is most commonly made in either the sitting or the supine position, but the 2 positions give different Arm Position Matters In Blood Pressure Readings According To UCSD "In every body position, the systolic and diastolic blood pressure measured with the arm perpendicular to the body was significantly lower than with the arm Influence of different supine body positions on blood pressure CONCLUSIONS: Body and arm position can both significantly influence the ambulatory blood pressure and therefore the day-night difference. IngentaConnect Body position and blood pressure measurement in Body position and blood pressure measurement in patients with diabetes mellitus. J Intern Med 2002; 251: 393-399. Aims. World Health Organization (WHO) IngentaConnect The effect of different body positions on blood Although there are more information on arm position in blood pressure influence of body position on the blood pressure readings in healthy young people. Descriptive Epidemiology of Blood Pressure Response to Change in The response of blood pressure to change in body position has been used in epidemiological studies as a measure of cardiovascular reactivity. |
| body position on blood pressure |
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