Name 9 things from the Human alimentary canal. (At least 6/9)
Mouth, salivary glands, liver, oesophagus, pancreas, large intestine, small intestine, stomach, gall bladder.
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Egestion is the remaining material such as bacteria (living and dead) Name another example of remaining material.
Any from 1 from Indigestible substances such as cellulose from plant cell walls, cells from lining of gut, water.
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True or false? Absorption is the movement of undigested food through the wall of the intestine into the blood or lymph.
FALSE! Absorption is the movement of DIGESTED food through the wall of the intestine into the blood or lymph.
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True or false? Villi are tiny, finger-shaped structures that increase the surface area
TRUE!
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True or false? Wall is two cells thick for short diffusion distance
FALSE! Wall just ONE cell thick for short diffusion distance
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True or false? Network of blood capilliaries to transport glucose and fatty acids away from the large intestine in the blood
FALSE! Network of blood capilliaries to transport glucose and AMINO acids away from the SMALL intestine in the blood
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True or false? Internal structure called a lacteal which transports fatty accids and glycerol away from the small intestine in the lymph
TRUE!
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Food enters the digestive system by mouth. What is this called?
This is called ingestion.
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Peristalsis is where food is moved through what system?
Digestive system
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What is digestion?
Digestion is the breakdown of large insoluble food molecules into small, water soluble molecules using mechanical and chemical processes.
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Where do preates catalyse the breakdown of protein into amino acids?
In the stomach and small intestine.
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Lipases catalyse the breakdown of fats and oils into what?
Fatty acids and glycerol.
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Where does amylase catalyses the breakdown of starch into maltose
In the mouth and small intestine.
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Where does maltase catalyses the breakdown of maltose into glucose
Small intestine
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What does mechanical digestion include?
Chewing in the mouth and churning in the stomach
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What substrate does protease break down?
Protein
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What substrate does lipase break down?
Lipids (fats and oils)
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What substrate does amylase break down?
starch
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True or false? Enzymes can break down nutrients into small, soluble molecules that can be absorbed.
TRUE!
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Mechanical or physical digestion? Teeth cut and crush food which is then mixed with saliva. Food is broken down into smaller pieces in the mouth my chewing.
This is an example of mechanical digestion.
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Name three types of teeth
Incisor, Canine, Premolar and molar
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Tooth decay happens when the what is damaged
Tooth decay happens when the HARD OUTER ENAMAL of the tooth is damaged. This happens when bacteria in the mouth convert sugars into the acids that react with the enamel.
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Name 4 ways to prevent tooth decay.
Avoiding foods with a high sugar content, Using toothpaste, Regular effective brushing to prevent the build-up of plaque, Drinking water containing fluoride.
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Other cards in this set
Card 2
Front
Egestion is the remaining material such as bacteria (living and dead) Name another example of remaining material.
Back
Any from 1 from Indigestible substances such as cellulose from plant cell walls, cells from lining of gut, water.
Card 3
Front
True or false? Absorption is the movement of undigested food through the wall of the intestine into the blood or lymph.
Back
Card 4
Front
True or false? Villi are tiny, finger-shaped structures that increase the surface area
Back
Card 5
Front
True or false? Wall is two cells thick for short diffusion distance
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