The Human Body

Kidney

The Trachea

Blood Poisoning

Digestive organs, the brain and lungs

60,000 miles (96,000 km).

The eyes

Uncontrollable winking.

Water.

Eight.

The skin! This applies to exterior surface, as it covers the body, appearing to have the largest surface area of all the organs. Moreover, it applies to weight, as it weighs more than any single internal organ, accounting for about 15 percent of body weight. For the average adult human, the skin has a surface area of between 1.5-2.0 square meters, most of it is between 2-3 mm thick.