Functions of the Gall bladder!
The main function of the gall bladder is the storage and the concentration of the bile, around ten times more than the bile in the liver. This bile can be said to be a liquid which is the secretory as well as the excretory product of the liver. The hepatoctes or the cells of the livers are the most efficient in its formations. The main constituents of bile are the bile salts that are the sodium torrocolate and the potassium torrocolate, bile acids, bile pigments, bilirubin and biliverdin, and also some of the varieties of phospholipids, cholesterol and lecithin.
The bile has its main function during the process of the digestion of the fats or the lipids. The process of fat digestion does not start before the bile acts on the fats and emulsifies it. Thus it can be said that the emulsification of the lipids is the initiation of the process of the fat digestion. This function also helps in maintaining normal levels of the cholesterols in check, and even does the all vital operations of the absorption activities of the vitamins A D E K which are soluble in fats.
Then the other function of the gall bladder is to lessen the alkaline nature of the bile of the liver, and hence take it towards the acidic side.
Then another important function of the gall bladder is the maintenance of equality of the pressure of the ducts of the biliary passages. It controls the actions of the food in the passage by itself contracting and relaxing the sphincter of the Oddi, and hence providing the smooth passage of the bile into the further parts of the alimentary canal.
This contraction of the gall bladder is actually initiated by a hormone which is named as the Choleycystokinin which is actually secreted from the duodenal mucosa.