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.

arterial blood mean pressure
Assessment Mean Arterial Blood Pressure Using Spectral and Chaotic
Mean arterial blood pressure. (MBP). was. anabzed by. spectral and chaotic anabses. in. hypertensive patients. Two antihypertensive

Mean Arterial Blood Pressure - What does MABP stand for? Acronyms
What does MABP stand for? Definition of Mean Arterial Blood Pressure in the list of acronyms and abbreviations provided by the Free Online Dictionary and

Control of Arterial Blood Pressure
autonomic nervous system, capillary fluid shift, hormonal mechanisms.

Critical Care | Full text | Peripheral arterial blood pressure
Measurement of mean arterial blood pressure in radial or femoral arteries is clinically interchangeable. It is not mandatory to cannulate the femoral artery

Arterial Blood Pressure Monitoring: An Introduction
Intra-arterial blood pressure monitoring has been a theoretical concept since the diastolic and mean arterial blood pressures and for the frequent

Mean arterial blood pressure estimation and its limitation -- Ahn
Mean arterial blood pressure (MAP) has clinical and physiologic significance in both the representation of perfusion pressure and its utilization in the

Mean arterial pressure
As blood is pumped out of the left ventricle into the arteries, pressure is generated. The mean arterial pressure (MAP) is determined by the cardiac output

Arterial blood pressure
When arterial pressure is measured using a sphygmomanometer (i.e., blood There is only a small decline in mean arterial pressure as the pressure pulse

Sect. 3, Ch. 7: Mean Arterial Blood Pressure (MAP)
Mean Arterial Blood Pressure (MAP). figure: This pressure (MAP) is defined as the average pressure in the arteries during the cardiac cycle.

Blood pressure - Wikipedia, the free encyclopedia
Arterial blood pressure (BP) is most accurately measured invasively. . The mean arterial pressure (MAP) is the average pressure measured over one

Mean arterial pressure - Wikipedia, the free encyclopedia
The mean arterial pressure (MAP) is a term used in medicine to describe a notional average blood pressure in an individual. It is defined as the average


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