E blood flowing. The doctor feels your pulse when you are sick, to find
out whether the heart is working too fast, or too slowly, or just right.
Some way is needed to send the gray fluid that is made from the food we
eat and drink, to every part of the body. To send the food with the
blood is a sure way of making it reach every part. So, when the stomach
has prepared the food, the blood takes it up and carries it to every
part of the body. It then leaves with each part, just what it ne