The heart works by circulating blood through the body.
1. The main function of the heart is to pump blood, which can maintain the physiological functions of the body, the heart has four chambers: the left atrium, the left ventricle, the right atrium and the right ventricle.
2. The specific working principle is that the right atrium receives blood from the upper and lower vena cava, and after passing through the atrioventricular orifice, the blood is fed into the right ventricle, which pumps the blood through the pulmonary artery to the lungs, and then converts the venous blood into the oxygenated arterial blood through the exchange of air in the alveolar membrane of the lungs.
3. Oxygenated arterial blood flows back to the left atrium through the pulmonary veins, enters the left ventricle from the left atrium, and then enters the aorta from the left ventricle through the pumping action of the heart, and then transports the blood to the various organs of the human body, and the cycle begins again and again.
It is recommended that patients should protect their heart in daily life, for example, do not often a lot of strenuous exercise, etc., to avoid inducing myocardial infarction and other diseases.