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Factors affecting the development of coronary heart disease
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| Submitted: Thu Sep 04 2003
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Debbie Spicer Factors affecting the development of coronary heart disease The heart needs a constant supply of oxygen and glucose to enable it to keep contracting. The heart gets its blood supply from arteries that branch from the aorta; these arteries are called the coronary arteries. As they come straight from the heart the blood in them is under very high pressure, the coronary arteries also have a small lumen compared with arteries in the rest of the body. This means that there is more friction and damage to the cells I the artery As the coronary arteries have a small lumen, they are at greater risk of being blocked. If they are partially blocked the blood supply to the heart is reduced so the heart gets less oxygen. Without oxygen, the muscles cell get cramp and cause a chest pain called angina. If the coronary artery gets totally blocked the myocardium (muscle)...
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