Circulatory+system

The circulatory system is made up of heart and blood cells. The circulatory system cirulates substances in the blood to every body part. It also transports gases, nutrients and waste around the body. by gus
 * __Overview__**


 * __Components and structure of the circulatory system

Heart Diseases__** Heart disease is the number one killer in the U.S. It is also a major cause of disability. There are many different forms of heart disease. The most common cause of heart disease is narrowing or blockage of the coronary arteries, the blood vessels that supply blood to the heart. This is called [|coronary artery disease] and happens slowly over time. It's the major reason people have attacks. Other kinds of heart problems may happen to the [|valves] in the heart, or the heart may not pump well and cause [|heart failure]. Some people are [|born] with heart disease.

Coronary artery disease is the most common type of heart disease. It is the leading cause of death in both men and women. Coronary artery disease happens when the arteries that supply blood to heart muscle become hardened and narrowed. This is due to the buildup of [|cholesterol] and other material, called plaque, on their inner walls. As the buildup grows, less blood can flow through the arteries. As a result, the heart muscle can't get the blood or oxygen it needs. This can lead to chest pain or a [|heart attack]. Most heart attacks happen when a blood clot suddenly cuts off the hearts blood supply, causing permanent heart damage. Over time, (CAD) can also weaken the heart muscle and contribute to [|heart failure]. Heart failure means the heart can't pump blood well to the rest of the body. By Melanie Bridle
 * __Coronary Artery Disease__**

one drop of blood contains a half drop of plasma, 5million red blood cells 10thousand white blood cells and 250thousand platelets. You have thousands of miles of blood vessels in your body. "Bill Nye the science guy" claims that you can wrap your blood vessels around the equator twice. Keep your heart healthy....it's going to have to beat approx 3billion times during your lifetime!!!
 * __Amazing Facts__**


 * __How does this system work?__**

the heart: ther hearts purpose is to pump blood around the body through the network of blood vessels the blood:the bloods job is to go around the body and give off oxygen to all the body parts the arteries: large blood vessels which carry the blood away from the heart the veins: vessels which are blood which carry the blood to the heart
 * __the functions__**
 * by gus

__the circulatorys purpose__** its purpose is to carry blood through out the body it supplies the cells of the body with oxygen and food and also carries