Digestion

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  • Created by: Lina
  • Created on: 09-04-14 10:48
Where are the digestive juices produced?
In the pancreas+ salivary glands
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What are the 2 functions of digestive juices?
1) To lubricate the food 2) To carry enzimes to aid digestion
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Where is bile produced?
In the liver
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What are the 2 functions of bile?
1) To neutralise acid formed in the stomach 2) To provide alkaline conditions for the enzymes to work most effectively 3) To emulsify fats- to break them down into tiny droplets- provides a larger SA for the lipase enzymes to work on
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How are enzymes mixed with the food?
In the mouth brought about by teeth+ tongue or in the wall of stomach+ small intestine- brought about by muscles
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Where is the water from the undigested food absorbed?
In the large intestine
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Why do we need enzymes?
They catalyse the breakdown of large food molecules to smaller molecules
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Where is amylase made?
Salivary glands, the pancreas, the lining of the small intestine
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What does amylase do?
Catalyses the breakdown of starch molecules into sugar molecules
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Where does amylase catalyse the breakdown?
In the mouth+ the small intestine
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Where is protease made?
In the stomach, in the pancreas, in the lining of the small intestine
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What does protease do?
Catalyses the breakdown of protein molecules into amino acids
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Where does protease work?
In the stomach+ the small intestine
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Where is lipase made?
Pancrease, lining of the small intestine
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What does lipase do?
Catalyses the breakdown of lipids into fatty acid+ glycerol
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Where does lipase work?
In the small intestine
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Where is hydrochloric acids made?
In the stomach
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What is the function of the hydrochloric acid?
Kills bacteria in the food
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Does protease in the stomach work better at low or high pH?
Low
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What are the best pH conditions for enzymes in the small intestine?
Slightly alkaline
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Where is bile released from?
Gall bladder- where it is stored
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Other cards in this set

Card 2

Front

What are the 2 functions of digestive juices?

Back

1) To lubricate the food 2) To carry enzimes to aid digestion

Card 3

Front

Where is bile produced?

Back

Preview of the front of card 3

Card 4

Front

What are the 2 functions of bile?

Back

Preview of the front of card 4

Card 5

Front

How are enzymes mixed with the food?

Back

Preview of the front of card 5
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