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18 Cards in this Set
- Front
- Back
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What is the function of the mouth? |
Cut the food into smaller pieces so the surface area is larger for the enzymes to work successfully |
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How is the mouth adapted to its function? |
Teeth cut down the food Salivary glands secrete amylase which breaks down starch into sugars within the food |
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What is the function of the oesophagus? |
Carries food from the mouth to the stomach. |
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How is the oesophagus adapted to its function? |
Made of a thick muscular wall which performs the process of peristalsis |
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What is the function of the stomach? |
To store and digest the food |
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How is the stomach adapted to its function? |
It's a muscular sac so that it can churn the food, breaking it down further Contains hydrochloric acid which kills the pathogens and creates acidic conditions (optimum pH) for the enzyme, protease, to convert protein into amino acids Stomach wall produces mucus to stop the stomach digesting itself |
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What is the function of the liver? |
The liver produces bile which neutralises the hydrochloric acid to create the optimum pH for both protease and lipase that are secreted from the small intestines |
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What is the function of the gall bladder? |
Releases bile |
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What is the function of bile? |
Emulsifies fats (breaks large fat droplets into smaller ones) |
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What is the pancreas? |
A large gland situated below the stomach |
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What does the pancreas produce? |
Pancreatic juice which contains protease, lipase and amylase |
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What is the function of the small intestine? |
To further digest food through enzymes amylase, protease and lipase |
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How is the small intestine adapted to its function? |
It is are folded into villi which gives it a larger surface area. The villi then has millions of tiny projections called microvilli which increases the surface area further. This large surface area means the process of diffusion through the small intestine wall is more efficient. The small intestine diffuses the products of digestion into the bloodstream |
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What is the function of the large intestine? |
To absorb water from waste of digestion, forming faeces |
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What is the function of the rectum? |
To store faeces before being removed via the anus in the process of egestion |
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Where is amylase produced? |
Salivary gland Pancreas Small intestine |
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Where is lipase produced? |
Small intestine Pancreas |
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Where is protease produced? |
Stomach Small intestine Pancreas |
