Describe two features of the small intestine which help it in the absorption of the products of dige

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(1) Its function is to absorb water from the remaining indigestible food matter, and then to pass useless waste material from the body.

(2) The main features of the small intestine include the three main sections; the duodenum, jejunem, and the ileum. They also have rugae and villi which help produce more surface area for absorption of nutrients from digested food. There are also structures called lacteals that absorb fats into the lymphatic system. Most people think that your stomach does most of your digestion, but this is not true. Your stomach only digests proteins. It is the duodenum of your small intestine, with the help of the pancreas and gall bladder, that digests all three types of food. It completes the protein digestion process and then also digests fats and carbohydrates.

(3) Food is churned by the stomach through muscular contractions of the wall. The twisting, turning, and churning of food in the stomach is part of mechanical digestion.

(4) (i) Microvilli (epithelial cells)
(ii) The villus lacteals are the parts in villi that absorb fatty acids in your food.
(iii) Villus capillaries
(iv) Lymph duct (fluid)

Please review: http://www.learn.ppdictionary.com/resources/organs_of_digestion_final.htm
http://www.learn.ppdictionary.com/resources/ColonReflexs.htm

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