Blood is the life-maintaining fluid that circulates through the body's heart, arteries, veins, and capillaries. Click on the links above to learn more about this topic.
© 2000-2017 The StayWell Company, LLC. 800 Township Line Road, Yardley, PA 19067. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.