Heart
The heart is a muscle that pumps blood around the body. In a heart attack (myocardial infarction), part of the heart muscle to die while not getting blood. To stay healthy, the heart requires oxygen and nutrients carried by the other's blood. This is obtained through the arteria (blood vessel) coronary, which wrap the outside of the heart.
Heart Disease
Heart attack
These diseases can affect any part of the heart. However, the most common disease is a chronic disease in the coronary arteria called atherosclerosis. Therefore, heart disease commonly known and most common is coronary heart disease or coronary arteria disease. The disease is most often causes a heart attack in someone who can cause death. Cause is narrowing of the coronary arteries, where the vessel serves to provide blood to the heart muscle. Constriction caused by a pile of cholesterol or other proteins derived from food intake in the body. This buildup causes the coronary blood vessels become stiff. Rigidity is called atherosclerosis.
Atherosclerosis occurs if there is accumulation of plaque, or fatty deposits in artery walls. After a time, plaque can accumulate, harden and narrow arteries, and inhibits blood flow to the heart. Coronary arteria disease or coronary artery disease (CAD) is that basically leads to most heart attacks.
Blockage in one or more coronary arteries can cause a heart attack suddenly. The reason for asking the heart exceeds the available oxygen so that trigger heart attacks. Why? If the heart muscle does not receive oxygen for a long time, the surrounding tissue may be damaged. Unlike other networks, did not have the heart muscle regeneration. The longer the attack, the more damage to the heart and the more likely it died.
Even in an artery that is not too narrow because timbungan plaque and fat deposits of plaque can rupture and form a crust of blood or thrombus. Moreover, the diseased arteries also tend to experience sudden muscle contractions. Thus, a piece of crust of blood can form a contraction, releasing chemicals which then result in narrowing the artery wall, triggering a heart attack.
If the work system of the heart is damaged, the normal rhythm of the heart can become chaotic and the heart began to tremble with uncertainty or experiencing fibrillation. This abnormal rhythm known as arrhythmia is a deviation from normal heart rhythm. This will cause the heart to lose its ability to effectively pump blood to the brain. Within ten minutes, brain death and the patient was beyond help.
In addition to coronary heart disease due to fat deposition in the arterial wall, there are also other heart diseases caused birth defects. For example imperfect heart, heart valve disorders, weakened heart muscle. Another cause is the bacteria that cause infections of the heart.
