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FROGS DIGESTION SYSTEM Frogs have a mouth which serves as an insect trap The mouth consist of a tongue and two sets of special teeth The frog has a large elastic gullet that allows it to swallow large prey Food passes from the gullet through the tubular esophagus and then into the stomach Then chemical digestion occurs in the stomach and the small intestine with the help of the digestive enzymes that are released by the liver and pancreas Giffard R Nat M 1986 After digestion is completed nutrients are absorbed into the blood through the walls of the small intestines The waste left over is moved into the large intestine where water is reabsorbed Then the waste is eliminated through the cloaca and the anus Cooper H Hays S WalkerD Linden R 1982 The frog has three lobed livers The functions of the liver is to release digestive enzymes to help the stomach and the small intestine with mechanical digestion The gall bladder stores bile which breaks down the partially digested foods that enters the small intestine Bile has no enzymes but still manages to break down fat into tiny droplets that are ready for faster chemical breakdown The frogs stomach is not as complex as a herbivores because they have to break down cellulose which takes a longer time Giffard R Nat M 1986 This concludes my study on the digestion system of the frog FROGS CIRCULATORY SYSTEM A frog has a closed circulatory system just like humans This means blood is always enclosed in blood vessels as it circulates the organisms body Blood also circulates more rapidly and efficiently through a closed circulatory system It consists of a very well developed system of arteries veins and capillaries that reach all the living cells of an organism Cooper H Hays S Walker D Linden R 1982 The frogs heart consists of three chambers The
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