biology - study of fish digestive system

May 19th, 2015
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As with all animals digestion in fish involves the breakdown of eaten food into its smaller component parts, amino acids, vitamins, fatty acids etc. which can then be used to build up new fish body. The breaking apart or breaking down of the eaten material is called anabolism, the building up of new material is called catabolism and these two together make up the whole of metabolism

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IntroductionAs with all animals digestion in fish involves the breakdown of eaten food into its smaller component parts, amino acids, vitamins, fatty acids etc. which can then be used to build up new fish body. The breaking apart or breaking down of the eaten material is called anabolism, the building up of new material is called catabolism and these two together make up the whole of metabolism. Grammatically it follows from this that the respective adjectives are anabolic, catabolic and metabolic. As anybody who has watched a gold fish knows quite well fish eat and defecate. Like all animals the fish's body is basically a long tube that is twisted up on itself a bit in the middle and has a layer of muscles and ancillary organs around it. This tube has the mouth at one end and the anus or cloaca at the other. Mostly we consider the mouth to be the entrance to the tube and the anus to be the exit, food items come in and faeces go out. Different things happen in different parts of the tube and for the sake of study and understanding we give the various parts names. Mouth - Pharynx - Oesophagus - Gizzard - Stomach - Intestines - Rectum.However not all fish have all these parts, some, like many of the Cyprinids and Cyprinidonts, lack a stomach, while a gizzard is only found in a relatively few species. MADE BY:DENISLOWELLSTEFFENThe MouthFood is brought into the body via the mouth, and the jaws of modern teleost fish are a mechanical wonder, and the way the many bone

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