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Heart disease is an umbrella term for a number of different diseases affecting the heart. As of 2007, it is the leading cause of death in the United States, England, Canada and Wales, killing one person every 34 seconds in the United States alone.
The blood vessels consist of arteries, arterioles, capillaries, venules, and veins. All blood is carried in these vessels. The arteries, which are strong, flexible, and resilient, carry blood away from the heart and bear the highest blood pressures. Because arteries are elastic, they narrow (recoil) passively when the heart is relaxing between beats and thus help maintain blood pressure. The arteries branch into smaller and smaller vessels, eventually becoming very small vessels called arterioles. Arteries and arterioles have muscular walls that can adjust their diameter to increase or decrease blood flow to a particular part of the body.
2009-09-25

What Are Normal Cholesterol Readings  

It's always good to keep a check on the level of cholesterol in the body. This is especially necessary if you exceed the age of 40 years. It is then that the heart becomes weak, and there are more chances of developing heart disease by more. There is a simple way to ensure that the level of cholesterol in the body within the permissible limits. You can specify a simple blood test at the level of cholesterol in the body.

There are two schools of thought, if your cholesterol reading is normal or not. The first deals with the total cholesterol in the blood and the other looks at the ratio of good cholesterol to bad cholesterol. Low-density lipoprotein cholesterol, LDL, or is referred to as "bad" cholesterol, because they are in the arteries, arteriosclerosis, the store itself. High-density lipoprotein cholesterol, HDL, is known as "bad" cholesterol because it takes the cholesterol out of the heart, the liver for use or for excretion. If there is too much LDL cholesterol in the body, it leads to the formation of plaques in the arteries of the heart, which can cause a heart attack. When these plaques rupture, can lead to formation of a blood clot in the artery.

why you should have healthy cholesterol levels in your body. As a rule, your blood sample to show what are your cholesterol readings. However, you can ask your doctor what are normal values. In general, with less than 200 mg /dl total cholesterol less than 130 mg /dl, LDL cholesterol is considered normal. Such people have a lower risk of developing heart disease.

 

About Author:
Pauline Go is an online leading expert in the medical industry. She also offers top quality articles like:
Coronary Sinus Function, Nervous System Disease.

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