Individuals who want to donate whole blood or apheresis must be : At least 16 years old (donors under the age of 17 may only donate whole blood, and must have a signed parental/guardian consent form). At least 19 years old and weigh a minimum of 110 pounds.
Your heart handles blood in much the same way. The heart pumps about 2,000 gallons (7,571 liters) of blood a day through its chambers. Of Â­course, we're not big enough to hold that much liquid, so it just pumps the same blood over and over, and it doesn't benefit from a drop of it. At least, not initially.
Just like an engine makes a car go, the heart keeps your body running. The heart has two pumps. The stronger pump uses arteries to send blood with oxygen away from the heart, throughout the body. The other pump uses veins to bring blood back to the heart and sends it to the lungs to get more oxygen.An electrical system in the heart controls the heartâs pumps (the heart beat or pulse).ust like an engine makes a car go, the heart keeps your body running. The heart has two pumps. The stronger pump uses arteries to send blood with oxygen away from the heart, throughout the body. The other pump uses veins to bring blood back to the heart and sends it to the lungs to get more oxygen.