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Ppt digestive system

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athirarajan94

The document discusses the structure and function of the small intestine and villi. The small intestine is coiled and folded within the abdominal cavity to enable complete digestion. It contains many finger-like projections called villi that increase the surface area for absorption. The villi contain blood vessels and lacteals that absorb nutrients from digested food and transport them to the bloodstream and lymph system.

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WELCOME ATHIRA RAJAN NATURAL SCIENCE
Ppt digestive system
DIGESTIVE SYSTEM Mouth Esophagus Stomach Liver Gall bladder Pancreas
Duodenum Small Intestine Large intestine Rectum Anus
Small Intestine
SMALL INTESTINE Seen as many folds, twisted and coiled within the abdominal cavity, enabling complete digestion of food.
SMALL INTESTINE C.S
VILLUS
VILLI Present in the infoldings of small intestine 40 to 50 villi are seen in each square millimeter.
FUNCTIONS OF VILLI Absorption of nutrients from the small intestine. Exchange of nutrients to blood and lymph.
STRUCTURE OF VLLUS
COMPONENTS OF VILLUS Branch of vein. Branch of artery. Capillaries that connects arteries and veins. Lacteal that branches from the lymph vessels.

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Ppt digestive system