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.

blood pressure pulse reading children
Vital Signs - Definition, Purpose, Description, Preparation
Tachycardia is a pulse rate over 100 bpm, while bradycardia is a pulse rate of under 60 bpm. Blood pressure is recorded for older children and adults.

Measuring the Blood Pressure
If the pulse is palpated as the cuff is being inflated and deflated the blood pressure may be estimated by palpation and reading the cuff pressure on the

Blood Pressure Science Project
Blood pressure and pulse monitor - Suggested monitors: Scientifics Online: Wrist Blood Pressure/Pulse Monitor Record each BP and pulse reading.

POSTURAL CHANGES IN BLOOD PRESSURE AND PULSE RATE AMONG BLACK
The study was part of the Minneapolis Children's Blood Pressure Study and was Two blood pressure readings and one pulse reading were taken after five

Reading Blood Pressure & Pulse
Blood pressure is measured in millimetres (mm) of mercury (Hg), and pulse rate in beats per minute. The picture shows a top reading of 122, a bottom reading

MedlinePlus Medical Encyclopedia: Blood pressure
The bottom number is the diastolic blood pressure reading. to perform a blood pressure measurement is a cuff and a device for detecting the pulse in the

High Blood Pressure (Hypertension)
It's not unusual for a first blood pressure reading to be high because the child is Identifying and treating high blood pressure in children will help

How to use a professional blood pressure monitor
Technically, the person administering the blood pressure reading should hold the forefinger and middle finger on the radial pulse which is just below the

Health and Beauty - Forecare 1315 Wrist Blood Pressure/Pulse
Buy Forecare 1315 Wrist Blood Pressure/Pulse Monitor- - Price Range: $57.75 from 2 Pressure: +- 3mmHg or +- 2% of reading Pulse: Within +- 5% of reading

Blood Pressure Monitors - Monitor your Health
Semi-Automatic Blood Pressure Monitors; Inflation of cuff is manual; Reading of Blood Pressure is automated; Digital Readout:; Systolic; Diastolic; Pulse

sphygmomanometer: Definition and Much More from Answers.com
An instrument for measuring blood pressure in the arteries, This improves the accuracy of the reading. Children and adults with smaller or larger than


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