Digestion

Digestion（It does, the ょ う?) With, organism substance chemistry, available nutrient. It causes digestion at multicellular levels, unicellular level and level inside the cell, but when such as digestion simply, the digestion in the alimentary canal of the multicellular levels in the animal (often digestion absorption) there is many a thing which it points.

Table of contents 1 The digestion in the human 2 Digestion of other animal 3 Digestion other than animal 4 Digestion at unicellular level 5 Cell digestion 6 Related item

The digestion in the human

Human (multicellular levels) as for digestion, substance in food (Protein、Carbohydrate、FatAnd so on) it points to the thing of the process which is disassembled in the molecule of absorption possible size. As for digestionAlimentary canalSo dividing into the floor extremely, to be done, mechanical disassembly such as digestion and, digestion enzyme and the like.

• mouth, as for the food mechanically it becomes small digestion (噛 む thing) depending upon. In addition from salivary glandSalivaWith the amylase where is secreted, is included in the salivaCarbohydrateCompared to smallSugarIt is disassembled.

• stomach, as the food is stirred by the motion of the stomach, the food is sterilized the stomach acid which is discharged from the stomach gland with (hydrochloric acid and the pepsin etc.), as, protein the peptone it disassembles in the water soluble substance which is done. ethanol is absorbed with the stomach.

• DuodenumSo, 膵 liquid (pancreatic juice) bile is secreted, many substances are disassembled, become nutrition.

• Small intestineSo, as the food is stirred by peristalsis motion and moves, it is included in the intestinal juice and the like digestion enzyme. In addition, as for most nutrition with small intestineAbsorptionIt is done. FurthermoreColonSo the moisture is absorbed.

Digestion of other animal

• Cow eye(Artiodactyl eye) animal ( cow・Deer・ヤギAnd so on), many one time the food which is swallowed resetting in the mouth from the stomach, again the 噛 むRuminantiaWith the operation which is called is done. In addition with four stomachs, in the 1st stomachMicrobeYou live in large quantities, you do the disassembly fermentation of the food which is taken in. With these digestion mechanisms, it is possible to take in the cellulose and the like which it cannot digest cannot absorb other Mammalia as nutrition.

• rabbit normally, are called the food droppings is done. Unless this excretes the special droppings which are called the "soft droppings", it is of acting which eats this, (eats, when it is not good living is many). As for the soft droppings the food fermenting in the appendix, being something which comes being, protein and vitamin and the like is included abundantly.

• Majority AvesToothIt does not have, but plant the esophagus advancedGizzardWith we have the sack which is called, we disassemble mechanically by fitting the sand and the food densely there.

• HerbivorousMulticellular organismsMany disassemble the cellulose in the alimentary canalFungusSymbiosisPoints, chemical disassembly is made to do to this germ. HoweverTermiteAnd so on the insect of part seems that can form the enzyme where itself disassembles the cellulose.

Digestion other than animal

• Insectiborous plantIt has the similar digestion mechanism of those which quickly and differ the animal.

• FungusIt is wide and being attached to the whole fungus, if it says digestion ability, it is possible to disassemble very cannot disassemble the other living thing many organic matter.

Digestion at unicellular level

• Single sphere of leucocyte(The macrophage) taking in big foreign material such as bacterium inside the cell, it digests those outside the blood vessel.

Cell digestion

As for the digestion inside the cell,Cell digestionWith it is called.

• LysosomeCell organelleAt one,LipaseAnd so on many types enzyme, we disassemble the substance which is carried from the other place inside the cell, it is the important organ for cell digestion.

Related item

• digestion enzyme