The heart is a organ in our body that is the center of the cardiovascular system. It is located behind the sternum (breastbone) and slightly to the left. It is has four main compartments. It is has two atria which are located superior to the two ventricles below.
This is a diagram of the heart. You are probably wondering what are all those arrows pointing to. I will explain. The arrows represent the flow of blood. We are going to start in the right atrium.
-The blood flows into the right atrium from the Superior and Inferior vena cavas which are the largest veins in our body. The Superior vena cava takes blood from the upper part of our body. The Inferior vena cava takes blood from the lower part of our body.
-The blood then travels through the tricuspid valve and into the right ventricle. The valves in the heart help stop the backflow of blood. The tricuspid valve is held by chordae tendineae.
-The blood after that goes through the pulmonary valve and into the pulmonary artery (THE VALVE SHOULD BE PRETTY EASY TO REMEMBER). This takes the blood to the lungs to become oxygen rich.
-The blood then comes back through the pulmonary vein and empties into the left atrium.
-The blood then travels through the mitral valve and into the left ventricle.
-The blood then travels through the Aortic valve and into the aortic trunk. Then it goes to the Aorta and to the rest to the body.
The left ventricle is the most muscular of all the compartments because it has to pump to all of the body.
I HOPED YOU LEARNED A LOT ABOUT THE HEART. REMEMBER, "JUST BEAT IT!"
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