Discuss the reasons for the global distribution of heart disease. Consider:
"h The nature of Coronary Heart Disease. What is it?
"h The Global distribution of Coronary Heart Disease.
"h The likely causes for this - include diet, smoking, lack of exercise as a minimum.
For the heart to function properly, your heart needs a steady supply of oxygen from the blood, which flows through the coronary arteries, to the heart muscle. Coronary heart disease is a term used to describe the condition when the supply is blocked by fatty deposits or a thrombosis.
The arteries become blocked due to a build up of fatty material in the lining. This causes the artery to become narrower, then the heart must pump harder to force the blood through. This causes the blood pressure to rise.
There are three classifications of Coronary heart disease.
If the coronary arteries become partly blocked, the person may experience chest pains brought on by exertion, which desist when resting again.
This form of coronary heart disease is known as angina pectoris. The pain is caused by the shortage of blood to the heart muscles. With this form of coronary heart disease there is no death of the muscle tissue.
If the arteries become completely blocked by a thrombus, this will cause a myocardial infarction, more commonly known as a heart attack. During a heart attack the lack of oxygen being pumped to the heart causes the heart muscle to die, and can also be fatal. Although many people survive with immediate medical attention.
The other type of coronary heart disease is heart failure. This is the blockage of the main coronary artery, which leads to the gradual damage of the heart muscles. When this occurs, the heart will become weaker and weaker until it...