The heart is the pump that moves blood through the lungs and the rest of the body. The blood carries oxygen and nutrients the body’s cells need to work and takes away waste products. The heart has four chambers: The right side of the heart takes care of blood going to the lungs. The left side of the heart delivers blood to the rest of the body.
The circulatory system is made up of arteries that carry blood away from the heart, veins that bring blood back to the heart. People admitted to the MSICU have their hearts and circulation closely monitored.