Pulmonary circulation
Deoxygenated blood travels through the veins called inferior cava and superior vena cava into the right atrium.
Flows from the right atrium through a valve into the right ventricle
From the right ventricle the blood passes through another valve and into the pulmonary arteries
From the pulmonary arteries the blood is carried to the lungs to pick up oxygen and get rid of carbon dioxide
New oxygenated blood is the returned to the left atrium of the heart by the pulmonary veins
General Circulation
Oxygenated blood passes from the left atrium through the valve into the left ventricle
Then gets pumped into the aorta, main artery through the abdomen
Blood is pumped all around the body, gives oxygen and nutrients to all the cells
Once exchange in the cells has been completed, blood is deoxygenated and full of waste.