The liver is the largest gland in the human body. It is also an essential organ of the digestive system and has a wide array of functions.
On average, the liver of an adult weighs between 3.2 and 3.7 pounds. It is located in the right upper quadrant of the abdominal cavity. The liver has many functions and plays a large role in human metabolism and digestion. The organ stores glycogen, decomposes red blood cells, synthesizes plasma proteins, produces hormones, and removes toxins and waste products from the blood. The liver also produces bile and sends it to the gallbladder for storage. The bile is then released into the digestive system to emulsify fats.