Question

what is the function of liver

Answer 1

The liver has many functions

Some of which are the following :-

1 ▪ Carbohydrate metabolism :-

Glucose is a vital energy source for cells and its levels in blood stream must remain constant .

The liver helps maintain blood glucose levels in response to the pancreatic hormones insulin and glucagon .

After a meal , glucose is dealt with by glycogenesis in which the liver converts glucose into glycogen for storage .

In between meals orduring starvation , blood glucose levels fall .

The hepatocytes (bile secreting liver cells ) detect this change , and restore glucose levels by either glycogenolysis which converts glycogen bavk to glucose or gluconeogenesis in which non sugars such as amino acids are converted to glucose .

2▪ Fat metabolism :-

The liver is involved in fat metabolism and synthesizes lipoproteins , cholestrol and phospholipids essential for many body functions .

If fat is in excess , the liver prepares for storage .

Lipogenesis:-

is the process in which fats composed of fatty acids and glycerol are converted for storage in subcutaneous tissue and other storage depots.

Lipolysis :-

If energy and glucose levels are low , stored fat is converted back into glycerol and fatty acids by a process called lipolysis . This occurs in adipose cells but the fatty acida and glycerol are transported to the liver for use as an alternative energy supply .

3▪ Protein metabolism :-

Amino acids are transported to the liver for protein synthesis and most of the body protein is synthesized here . If protein is in excess amino acid can be converted into fatand stored in fat depots or if required they are converted into glucose for energy by gluconeogenesis .


4▪ Detoxification :-

The liver plays an important role in detoxification and destruction of endogenous and exogenous harmful substances . The liver's own phagocytes which reside within the lobules known as Kupffer cells , digest and destroy cellular debris and any invading bacteria . Other exogenous substances such as drugs and alcohol are detoxified by the liver

5▪ Storage :-

The liver plays an important role as a storage facility .

The hepatocytes take up many vitamins and minerals from the blood and store them . These include vitamin A , B12 , D , E ,K and minerals like iron and copper .

6▪ Bile :-

The liver synthesizes bile which is important for fat digestion and is also a route for excretion from the body .
Bile is stored and concentrated in the gall bladder . The presence of fats in the gut during meals stimulates the gall bladder to empty .Bile enters the duodenum emulsifying fats into smaller globules , which can then be broken down further by lipase enzymes .


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Answer 2

☺️!!Hello!!☺️

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❇️ Liver is the largest and heaviest internal organ of the body.

❇️ It is not directly involved in digestion, but secretes bile which plays a major role in the emulsification of fats.

❇️ Liver also have detoxification function and help in converting toxic substances into non-toxic and then excretes them out from body.

❇️ It is site of glycogen synthesis and its storage.

❇️ It is the site of conversion of NH3 into urea through urea cycle.

❇️ It is the site of removal of degradation product of hemoglobins degestion in the form of bile pigments bilirubin and biliverdin.

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