There are two circulatory systems:
Pulmonary circulation is the movement of blood between the heart and the lungs. Blood leaves the heart through the pulmonary arteries and goes to the lungs. In the lungs, the blood absorbs oxygen and releases carbon dioxide. The blood then returns to the heart through the pulmonary veins.
Systemic circulation is the movement of blood to the rest of the body. Blood with oxygen from the lungs leaves the heart through the aorta. It distributes nutritive substances and oxygen throughout the body. Finally, it returns to the heart through the vena cava.
Pulmonary circulation is the movement of blood between the heart and the lungs. Blood leaves the heart through the pulmonary arteries and goes to the lungs. In the lungs, the blood absorbs oxygen and releases carbon dioxide. The blood then returns to the heart through the pulmonary veins.
Systemic circulation is the movement of blood to the rest of the body. Blood with oxygen from the lungs leaves the heart through the aorta. It distributes nutritive substances and oxygen throughout the body. Finally, it returns to the heart through the vena cava.
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