Heart Chalk Walkthrough

The circulatory system is an expanded yet intricate system within our body that relies heavily on our heart. First, deoxygenated blood flows from both the superior and inferior vena cava into the right atrium. It then passes through the tricuspid valve and into the right ventricle, before it finally flows through the pulmonic valve and out both pulmonary arteries into the lungs. The blood then goes through a gaseous exchange with the lungs and becomes oxygen-rich. The oxygenated blood then flows back from the pulmonary veins and into the left atrium. The blood then goes through the mitral valve into the left ventricle, and then through the aortic valve. Finally, the blood exits through the aorta, and circulates throughout the body before going through the same process again.