What is a capillary and what is its function?
Cholesterol is a substance found in the cell membranes of all tissues, and it is transported in the blood plasma of all animals. It is required for normal cellular function. Cholesterol is either made by the body, or derived from the diet, in which case it is delivered by the bloodstream. If the diet contains too much cholesterol, it will cause a condition known as arteriosclerosis. Arteriosclerosis is a general term describing any hardening (and loss of elasticity) of medium or large arteries. This is caused when excess cholesterol is deposited on the inside of the arteries in the form of plaque. As the plaque builds up, the inside of the artery becomes smaller and smaller, and that makes the heart have to work harder and harder to get the blood though. Sometimes these plaque build-ups inside the arteries can break loose. Remember that arteries carry carrying blood away from the heart, and they get smaller and smaller until they reach the capillaries which are very tiny indeed. A loos
