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The Digestive System
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
The Digestive System
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.
Tooth
Tooth decay
Amylase
The Oesophagus
Protease
1. The enzyme protease is made in the
stomach, pancreas and small intestine.
It catalyses the breakdown of protein
into amino acids.
Protease
Lipase and Bile
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.
Bile
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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