Myocardium
Layer of the heart wall that contracts
Myocardium is the muscular tissue of the heart that is responsible for the contraction and relaxation of the heart chambers that allow blood to be pumped throughout the body. It is made up of specialized cardiac muscle cells called cardiomyocytes which are interconnected by intercalated discs.
The myocardium receives its blood supply from the coronary arteries which are the main source of oxygen and nutrients to the cardiac muscle. The efficient functioning of the myocardium is crucial for maintaining the blood flow and overall health of the body.
The myocardium plays a crucial role in regulating the heart rate and rhythm through the electrical impulses that are generated within the heart. These electrical impulses stimulate the myocardial cells to contract, which in turn causes the heart to beat and pump blood throughout the body.
The myocardium is also responsible for responding to changes in the body’s demand for oxygen and nutrients. It is capable of increasing its contraction strength and heart rate to accommodate increased blood flow, such as during exercise or stress.
Damage to the myocardium, such as in myocardial infarction (heart attack), can lead to a loss of function and potentially life-threatening complications. Therefore, it is crucial to take care of the myocardium through a healthy lifestyle, proper nutrition, and regular exercise.
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