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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Science Fair Projects - What is the effect of music beat on a The purpose of this experiment was to determine how two different tempos of music would effect 6th grade boys' blood pressure. Ingredients Music and the Brain Furthermore, baroque music decreases blood pressure and enhances the ability to learn. Music affects the amplitude and frequency of brain waves, Lower blood pressure and relieve stress naturally Doctors have long suspected that our breathing affects our blood pressure. .. This music alone could lower your blood pressure! Neuroscience for Kids - In the News - Music and Stress The brain mechanisms responsible for the beneficial effects of music on stress, heart rate and blood pressure are not clear. However, these new data suggest THE INFLUENCE OF MUSIC UPON ELECTROCARDIOGRAMS AND BLOOD PRESSURE briefly summarized, is to ascertain the effect of different kinds of. music. upon the heart and blood pressure in individuals. who are known to Significant New Definitions, Publications, Risks, Benefits 22 Randomly introducing a pause into the music lowers blood pressure even further. These effects are particularly marked in people who have had musical Does music effect blood pressure? Subject: Does music effect blood pressure? Date: Sun Jan 9 13:20:51 2000 Posted by Cliff Blasengame Grade level: grad (non-science) School: Police Officer The Effects of Volume on Heart Rate and Blood Pressure Based on this observation, we wondered whether volume affects heart rate and blood pressure. We hypothesized that loud and soft music affects heart rate and Science Project The purpose of this experiment was to determine how two different tempos of music would effect 6th grade boys' blood pressure. I became interested in this CDs may lower your BP - Lifelines - effect of music on blood CDs may lower your BP - Lifelines - effect of music on blood pressure - Brief Article from Vibrant Life in Health provided free by Find Articles. Re: Does music effect blood pressure? Re: Does music effect blood pressure? Date: Wed Mar 8 12:05:21 2000 Posted By: A.E., Undergraduate, Cell biology and genetics, University of British |
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