![]() ![]() The path of blood through the heart also makes up a major part of the circulation because the heart also needs to be nourished, and this is where both oxygenated and deoxygenated blood flow. The heart is made of four chambers which receive and pump blood. In the heart, the two circuits of the circulatory system (pulmonary and systemic circulation) converge. Before blood flows to the various parts of the body, it circulates in the heart and passes through the lungs.In this article, we will describe thepath of blood through the heart and discuss the function of the heart as part of the circulatory system. Understanding the function of the heart is helpful to learn more about its anatomy. Here are the basic parts of the heart: 1. The heart can be divided into right and left halves, as well as into the upper and lowerĬhambers. There are two upper chambers called atria and two lower chambers called ventricles. On each side of the heart, there are one atrium and one ventricle. Blood from the body goes back to the heart via the right atrium.From the right atrium, blood will then pass through a valve called the tricuspid valve, to go to the next chamber. Valves are structures that make sure there is a one-way forward flow, thus keeping the blood from passing backward. The right ventricle receives blood from the right atrium and pumps it to the lungs through the pulmonary arteries, which are guarded by another valve called the pulmonic valve. The pulmonary arteries distribute blood to the lungs. ![]() Blood circulates in the lungs, where oxygen (O2) is added to the bloodand carbon dioxide (CO2) is removed. Blood returns to the heart through the pulmonary veins, which go into the left chambers. ![]() The left atrium receive blood from the lungs and pushes it through the mitral valve to pass it into the left ventricle. The left ventricle pumps blood to the rest of your body through the aorta, with blood passing through to theaortic valve. The path of blood through the heart begins with the right atrium receiving blood, which has circulated through most of the body.The aorta is the largest artery in the body, which delivers the blood to the rest of your body. This blood is also relatively high in carbon dioxide, which is a product of metabolism in the tissues.This blood is relatively low in oxygen because most of it has already been delivered to different organs and tissues. The muscular right ventricle pumps the blood into your lungs for oxygenation via the pulmonary arteries.The right atrium empties the blood into the ventricle after passing through the tricuspid valve.Blood is delivered back to the right side of the heart by the large vein called the vena cava. ![]()
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