An organ in the upper abdomen that aids in the digestion of food and removes waste products and worn-out cells from the blood.

The liver is the largest solid organ in the body and weighs about three and a half pounds (1.6 kilograms).

It measures about eight inches (20 cm) horizontally (across) and 6.5 inches (17 cm) vertically (down) and is 4.5 inches (12 cm) thick.