Its main functions include the filtration of blood and the elimination of toxic wastes and the production of enzymes that help digest food, converting them into substances needed for the proper functioning of the body. Some nutrients have to be chemically altered (metabolized) in the liver before the rest of the body can use as energy source. The liver produces some of the clotting factors that prevent the blood is too liquid and also secretes bile to the intestine to help absorb nutrients.

The liver is divided into three lobes, the right, the left and a smaller one called square, which in turn are subdivided into segments. Unlike most other organs of the body receives blood from two sources. The hepatic artery supplies the liver with blood rich in oxygen while the portal vein carries nutrient-rich blood from the intestines. All blood from the digestive tract through the liver before it reaches the rest of the body, making it a sort of ‘office’ from the outside world.

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