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Role of liver in digestion.

Updated on July 28, 2016

Role of liver in digestion.

Liver secretes bile, which may be temporarily stored in the gall bladder and released into duodenum(part of small intestine) through the bile duct. The bile is green, watery fluid. It contain no enzymes, but it's green colour is due to the bile pigments, which are formed from the breakdown of haemoglobin in the liver. The bile also contain bile salts, which act on fats, and emulsifies them. It means that they are broken down into small globules, which are then easily digested by water-soluble lipase.

Note

The liver is easily ruptured because it is large, fixed in position, and fragile or it may lacerate by a broken rib. Liver rupture or laceration may result in severe internal bleeding. The liver may become enlarged as a result of heart malfunctioning, hepatic cancer or may be damaged due to hepatitis or alcoholic.

Defects

If bile pigments are prevented from leaving digested track, the may accumulate in blood, causing a condition known as Jaundice. Cholesterol, secreted by the liver, may precipitate in the gall bladder to produce gall stones, which may block release of bile.

Additional role

Liver convert toxic substance, ammonia, which is a waste product of amino acid metabolism, to less toxic compound i.e urea, which is then excreted by kidneys.

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