Explain circulation in heart
Answers
Explanation:
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
Human hearts allows double circulation once from the lungs to the heart,systematic circulation and once from the organs of the body to the heart, pulmonary circulation. The heart is divided into four chambers namely, right ventricle, left ventricle, right atrium and left atrium. From the lungs the blood enters to the left ventricle of the heart and from the other parts of the body the deoxygenated blood enters to the right auricle or atrium of the heart. One point to be noted here that, artery generally carries oxygenated blood but the pulmonary artery carries deoxygenated blood and veins generally carries deoxygenated blood but, in case of pulmonary vein, it carries oxyganeted blood.