Explain the design of small intestine
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SMALL INTESTINE HAS VILLI -HAIR LIKE PROJECTIONS WHICH ARE PRESENT ON THE SURFACE OF WALLS OF THE STOMACH.THESE HELP IN INCREASING THE SURFACE AREA OF STOMACH WHICH HELP IN ABSORBING THE DIGESTED FOOD. ITS LENGTH DEPENDS UPON THE TYPE OF FOOD THE ORGANISM INTAKES
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it is a long coiled tube of about 7 cm It is divided into three parts the deodenum jejunum and ileum it has intestinal glands which secretes the intestine and uses for the digestion of food it also helps in absorption of the digested food particles by the finger like projections called villi
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