how many miles of blood vessels are there in the human body?
A humanâs small intestine is 6 meters long. The human body is 75% water. Your blood takes a very long trip through your body. If you could stretch out all of a humanâs blood vessels, they would be about 60,000 miles long. Thatâs enough to go around the world twice. The strongest bone in your body is the femur (thighbone), and itâs hollow! The width of your armspan stretched out is the length of your whole body.