Blood Vessels - 500 Ways

Blood Vessels

If you stretched out all the blood vessels and capillaries in your body, they would wrap around the equator two times. The smallest of your capillaries are one-fiftieth the diameter of one of your hairs. If you weigh twenty-five pounds (11 kg) more than average, your heart has to work to circulate blood an extra 5,000 miles (8,000 km).

Leave a Reply

Your email address will not be published.