Introduction The heart plays a central role in the human cardiovascular system because it is the motor of the circulatory system. The blood from the body’s circulatory system first reaches the right half of the heart. From there the blood is pumped into the lungs, where it is supplied with oxygen. From the pulmonary circulation … Task of the heart
Tasks of the atria In the atria, the heart collects the blood from the preceding circulatory segments. Through the upper and lower vena cava, the blood from the body’s circulation reaches the right atrium. From there it is pumped through the tricuspid valve into the right ventricle. The atrium itself has hardly any pumping function. … Tasks of the atria | Task of the heart
Task of the heart valves The heart has four heart valves, whereby one differentiates between pocket and sail valves. The two sail valves separate the atria of the heart from the ventricles. The so-called tricuspid valve lies between the right atrium and the right ventricle, the mitral valve forms the border between the left atrium … Task of the heart valves | Task of the heart
Task of the pacemaker A pacemaker is needed when the heart is no longer able to beat regularly on its own. This can have various causes. For example, the sinus node, the heart‘s own pacemaker, no longer works reliably or there are problems in the conduction system. In both cases the pacemaker can take over … Task of the pacemaker | Task of the heart
During a heart attack, also known as myocardial infarction or heartbeat, a part of the heart muscle (myocardium) is undersupplied due to a circulatory disorder (ischemia). This lack of oxygen causes this part of the heart muscle cells to die. The circulatory disorder occurs because one of the vessels supplying the heart muscle is blocked. … Causes of heart attack
With the woman Heart attacks among women are becoming more and more frequent in Germany and are now among the main causes of death. One reason for this seems to be that women react differently to medication due to their different hormone balance and physical condition. For example, the frequently prescribed drug acetylsalicylic acid (ASA) … With the woman | Causes of heart attack
Stress A heart attack is often caused by emotional stress or physical exertion. It is also caused by overwhelming emotional events such as the sudden death of a close person, a great shock or great excitement (e.g. as a spectator in a stadium watching a World Cup final victory). In such cases, the heart attack … Stress | Causes of heart attack
The most common causes With the number of the factors of risk also the individual risk increases to get a cardiac infarct. To the main risk groups for a cardiac infarct therefore all persons are to be counted, with whom individual or mehre factors of risk are particularly pronounced. For example, patients with a condition … The most common causes | Causes of heart attack
Other causes In very rare cases, a heart attack can be triggered by other causes: For example, an inflammation of the blood vessels can cause a heart attack. In addition, clots coming from other vessel sections can be washed into the heart and block the coronary arteries. There are still congenital malformations that increase the … Other causes | Causes of heart attack
Avoid causes To prevent a heart attack, you should avoid the development and progression of calcification of the blood vessels. This can be achieved by reducing or completely avoiding the risk factors. You should therefore take care to live healthily. The following factors are the most important ones. One should stop smoking, this reduces the … Avoid causes | Causes of heart attack
