¶ … Heart
The basic work of the heart is to pump blood to the entire body. It performs two types of functions, electrical and mechanical. The electrical function of the heart is the periodic contraction that is triggered by the pacemaker. The pacemaker generates the pumping effect throughout the heart. This pumping action commonly known as action potential is carried in an electrical conduction system. The mechanical function is the fluidic movement of blood; the heart is a pump. The heart's anatomical features include; ventricle, which is the pump, heart valves; that allow blood to flow one way and the atria, which includes the four chambers of the heart. The heart is susceptible to disease and as a result if unable to pump blood can lead to failure in other body organs.
Treated Heart Conditions
Cardiology is generally a field of medicine focusing on diagnosis and treatment of the heart. Discussed here are some conditions of the heart, there causes and symptoms. According to Marill (2012), Ventricular fibrillation occurs when the heart's electrical impulses are unsynchronized. When this happens, the right and left ventricles unusually contract fast disabling them from pumping enough blood to the body. This condition may occur without notice and when it does, thorough medical tests are recommended to get a clear prospective of the disease. Marill explains that Angina pectoris and myocardial infarction result from build up of plaque around the coronary artery leading to clogging and narrowing of the walls. The narrowing deprives the myocardium of oxygen and necessary nutrients. In some instances, heart defects and other infections can affect the pacemaker node; this can result to irregular and slow heart rhythm: a condition known as bradycardia. Symptoms...
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