1.The Digestive System breaks down food and absorbs it into the bloodstream. 2.The main organs of the digestive system are the stomach, pancreas, gall.

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Presentation transcript:

1.The Digestive System breaks down food and absorbs it into the bloodstream. 2.The main organs of the digestive system are the stomach, pancreas, gall bladder, small and large intestine, rectum and anus The Digestive System

Digestive Enzymes 1.Starch, Proteins and Fats are insoluble. 2.They must be broken down before they can be absorbed. 3.Enzymes speed up the break down. Digestive Enzymes

Amylase 1.The enzyme amylase is made in the salivary glands, pancreas and small intestine. 2.It catalyses the breakdown of starch into sugars. Amylase

Tooth Amyase

Tooth decay Amyase

Amylase

The Oesophagus

1.The enzyme protease is made in the stomach, pancreas and small intestine. It catalyses the breakdown of protein into amino acids. Protease Protease

Protease

1.The enzyme lipase is made in the pancreas and small intestine. It catalyses the breakdown of fats into fatty acids and glycerol. 2.The liver produces bile. Bile is stored in the gall bladder. When released into the small intestine it neutralises stomach acid and emulsifies fats. Lipase and Bile Lipase and BIle

Bile Bile

Lipase Lipase

The Small Intestine 1.The small intestine absorbs soluble food into the bloodstream. 2.The large intestine absorbs water into the bloodstream. The Small Intestine

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