In this chalk walk, we reviewed the flow of blood throughout the circulatory system. The heart is composed of four main chambers, the right and left ventricle, and the right and left atrium. The right side transports de-oxygenated blood through the system to the left side that transports oxygenated blood. Deoxygenated blood enters through the right atrium, passing through the tricuspid valve into the right ventricle. From here it passes through the pulmonary arteries into the lungs. The lungs inhale oxygen, which is transported through the blood into left pulmonary veins. It passes through the left atrium, past the bicuspid valve and dumps into the left ventricle. Once going through the aorta and inferior/superior vena cava, the blood recycles through the process again.
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