If you were to lay out the circulatory system of a human being how long would it be?
Correct answer: Approximately 60,000 miles or 100,000 kilometers
Tom
Chris,
The intestines are not very long, a dozen metres or so.
But the surface area of the intestines is huge, I think a football field, due to the villi. Same with the lungs.
Chris
super 4, It seems impossible that all that milage is inside of us not to mention also the length of our intestines...