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Adaora10

Excretion
~0.3 mins read
EXCRETION
This is the elimination of waste metablolic products in the body.
Excretory waste products
This includes carbon(IV) oxide, water and nitrogeneous waste. The nitrogeneous wastes are urea, uric acid and ammonia.
*Urea is excreted by mammals and dogfish.
*Uric acid which is insoluble in water is excreted by birds, reptiles and insects.
*Ammonia is excreted by protozoa and bonyfish.
Nitrogeneous waste are by-products of protein.
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Adaora10

Liver
~0.7 mins read
The liver is the largest organ in the body of a mammal. It weighs about 1.5kg. The liver lies below the diaphragm and is located on the right side of the abdomen. The liver is dark red in colour and is divided into lobes. The liver secretes the bile which emulsifies fats. The liver is able to control major metabolic activities within the body.
Functions of the Liver.
*Regulation of blood sugar.
*Detoxification.
*Regulation of blood protein.
*Production of bile.
*Formation of red blood cells.
*Production of heat.
*Regulation of lipids.
*Manufacture of essential proteins.
*The liver is responsible for the breakdown of worn out red blood cells in adults.
*Storage of Vitamins.
*Storage of iron.
*Reservoir of blood.
Diseases of the Liver
*Infective hepatitis.
*Amoebic Liver abscess.
*Gall Stones.
*Diabetes Mellitus.
*Cancer of the liver.
*Cirrhosis.
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