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.

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Cuff for measurement of blood pressure - Patent 7166077
Blood pressure readings with CSI Model 3K blood pressure machines are an accurate, fast and non-invasive way of measuring blood pressure.

Blood Pressure Readings: Blood Pressure Machines for Measuring
Blood Pressure monitors provide advanced and practical measurement and reading of heart rate in form of scales. The Blood pressure measuring machines are

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Machines for measuring your blood pressure are not available on the NHS, you will have to buy your own. However, in some cases your doctor or nurse may lend

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Check out our top picks for automatic blood-pressure machines. Pulse: 30-160 beats/minute: Measuring Range Pressure Range of Circumference Approx.

Blood Pressure Machines
Measuring your blood pressure at home and keeping a record of the . The machine will show your systolic and diastolic blood pressures on the screen.

Blood Pressure Monitors: Recommended machines to measure blood
The ornamental design for an automatic blood pressure measuring machine, asshown. Description:. FIG. 1 is a front view of an automatic blood pressure

How to Measure Blood Pressure
Mercury machines (sphygmonometers) are being phased out because of its hazardous nature. They eliminate many of the errors in blood pressure measurement

Blood Pressure Monitors: advice on accurate blood pressure monitors
Machines for measuring your blood pressure are not available on the NHS so you will have to buy your own. They range in price from about á¸30 to á¸150.

Automatic blood pressure measuring machine - Patent D341658
The cuff is especially suited for use as a closed cuff in an automated blood pressure measurement machine or in stand-alone measurement use.

Blood Pressure Monitoring at Home -- familydoctor.org
Blood Pressure Monitors and Measuring Blood Pressure: Information and Advice They stock blood pressure machines that the British Hypertension Society


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