Could you describe the blood flow through the heart?

Blood flows through human bodies via a double circulatory system, the systematic system and the respiratory system, which are connected by the heart. Blood enters the right atrium of the heart from the vena cava, the blood is then pumped into the right ventricle by atrial contraction. The back flow of blood is prevented by tricuspid valve (interventricular valve). Following ventricular contraction, the blood is pumped out of the heart and to the lungs for oxygenation via the pulmonary artery. The oxygenated blood then returns to the left atrium of the heart through the pulmonary veins. The blood is pumped from the atrium into the left ventricle through the bicuspid valve, then the blood is pumped out of the left ventricle through the aorta (artery) which supplies the body with oxygenated blood.