ï»¿ Explain the functions of Liver ? from Biology Digestion and Absorption Class 11 Assam Board

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Explain the functions of Liver ?

Functions of Liver :

1.Â Secretion of bile : The hepatic cells secrete bile.

2.Â Glycogenesis : The cells of liver store glycogen. Excess amount of glucose is converted into glycogen. The process is called glycogenesis. It occurs with the help of hormone called insulin.

When there is need of glucose, then glycogen is coverted into glucose. This process is called glycogenolysis. It occurs in the presence of glucagon.

3.Â Deamination : Liver converts excess of amino acids into ammonia. This process is called deamination.

4.Â Detoxification : Liver converts toxic NH3Â into urea which is less harmful.

5.Â Storage of salts of Fe and Cu : Liver stores salts of Fe and Cu.

6.Â Manufacture of R.B.C. : Liver manfactures R.B.C. only in embryo.

7.Â Manufacture of fibrinogens : Liver manfactures fibrinogens which help in blood clotting.

8.Â Manufacture of Heparin : The liver manufactures haparin which checks clotting in body.

9.Â Generation of energy : Liver generates energy.

10.Â Phagocytosis : The Kupfferâ€™s cells engulf foreign bacteria and protect body from diseases.

11.Â Relief to heart : Liver eliminates excess of material like glucose and amino acids from food and thus provides relief to heart, otherwise heart has to circulate them also.

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Name the fat soluble vitamins.

Vit A, D, E and Â are fat soluble vitamins.
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What are Sanguivorous animals ?

The animals which suck blood e.g. leech, vampire bat, female mosquito etc.
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What is the function of enamel in digestion?

The enamel helps in the mastication of food.
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What is Diphyodont ?

Diphyodont is the condition of having two set of teeth during the life of an organism. For example : humans are diphyodont as they have two set of teeth namely temporary milk or deciduous teeth which are replaced by permanent or adult teeth.Â

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What is the order of arrangement of teeth in each half of the upper and lower jaw ?

TheÂ order of arrangement of teeth in each half of the upper and lower jaw is I,C,PM,M. Â I (incisors), C (cannine), PM (premolars), M (molars).
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