The liver is much more than a mere digestive gland. A separate discussion is necessary about what is the function of liver. It play an important role in whole process metabolism. The main function of liver given below ;!
Function of Liver in Digestive System
The bile produce in liver helps in the digestion of food in three ways;
- It emulsifies the fat with its salts.
- Prevents decomposition of food by checking the growth of bacteria.
- It also neutralize the acid coming from the stomach.
The Function of Liver in Blood
Regulations of Blood Sugar
The liver separate the excess of sugar from blood. And store these sugar in blood cell as form of glycogen (animal starch). This process is called glycogenesis.
When our stomach is empty then stored glycogen is changed into glucose. This glucose is added into blood stream for distribution to the body. The process is termed glycogenolysis.
By the using above two process liver maintain the sugar level of the blood.
Liver produce heparin, prothrombin, and fibrinogen. Heparin prevents clotting of blood inside the blood vessels. But at the time of any accidental injury clotting is necessary for excess loss of blood.
Prothrombin and fibrinogen help in the clotting of blood at the injured surface.
Formation of Red Blood Cells
Liver produce red blood cells in the embryo. The process of formation of red blood cells is called erythropoiesis.
Destruction of Red Blood Cells
The liver destroys the old worm-out red blood cells. Their haemoglobin is excreted as bile pigments.
Formation of Plasma Proteins
Liver produce soluble proteins of blood plasma, mainly albumin and globulins. They hold fluid in blood vessels by osmosis.
Other Main Function of Liver
In the liver amino acid coming from alimentary canal. Those necessary for protein synthesis are distributed to the tissue. The excess amount of amino acid is broken down. Their amino radical separating as ammonia. And their carbon chain changing into keto acid. This process is known as deamination.
Ammonia is toxic and need removal. While keto acid takes part in metabolism.
Many toxic substances formed by body. Some introduced from outside. Liver makes ineffective these both types of toxic substances.
Ammonia resulting from deamination is immediately converted into harmless urea. The latter is send via blood to the kidneys for removal as urine. Drugs are also detoxified in the liver.
Liver collects haemoglobin of the worm-out red blood cells. Then change it into bile pigments. The bile pigments and cholestrol pass into the alimentary canal. Then excreted out from body.
Synthesis of Vitamin A
Vitamin A is necessary for healthy development of skin. And also good for normal growth of body. It is important for our eyes. You want to know function and source of vitamin A.
Liver synthesizes vitamin A from the Beta- carotene. It is an orange yellow substances of carrots.
Production of Heat
Heat in body necessary for maintain temperature. And heat can also be in form of energy. The main source of heat is metabolism of food. Liver generates heat by its active metabolism.