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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Recommendations for Blood Pressure Measurement in Humans and Recommendations for Blood Pressure Measurement in Animals: Summary of an AHA Scientific Statement From the Council on High Blood Pressure Research, Animal Blood Pressure PowerLab systems and Chart make it easy for students to measure blood pressure in animals using intravascular or non-invasive techniques. Lab Animals' Blood Pressure Reported Cut by Sweetener - New York Times NutraSweet, the new sugar substitute used in diet drinks, will lower blood pressure in laboratory animals and may someday be used as a ''medical food'' in ALN Magazine™ | Non Invasive Blood Pressure for Mice and Rats The advantage of implantable radiotelemetry is the ability to continuously measure blood pressure in free moving laboratory animals. Animal Blood Pressure Monitoring (Misc.) - Biocompare Buyer's Guide Description: Provided the room temperature is at least 23° C, animals blood pressure can be measured without heating the. Indirect measurement of blood pressure in animals. Indirect measurement of blood pressure in animals. Hahn AW, Garner HE. Publication Types:. Review. MeSH Terms:. Animals · Blood Pressure · Blood Pressure Animal Blood Pressure Monitoring - Biocompare Buyer's Guide (1) » Animal Function (Pharmo » Animal Blood Pressure M Back up one level Animal Blood Pressure Monitoring (Misc.) Vet-Dop The non-invasive Doppler technique is the method of choice for measuring blood pressure in animals weighing less than 15 pounds, especially cats. NASAexplores 9-12 Lesson: Blood Pressure (Student Sheets) Consider different animals and speculate on whether a large animal, such as an elephant, would have a lower or higher blood pressure than a small animal, |
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