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16 Cards in this Set
- Front
- Back
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Define ingestion
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Eating or taking in food
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Define digestion
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breaking down of food into simple soluble components which can be directly used by the cells of the body
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Define absorption
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When digested food passes into the blood stream
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Define egestion
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Undigested food thrown out of the body in the form of faeces or stools.
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Name the different kind of teeth in humans
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8 incisors
4 canines 8 premolars 12 molars |
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How many of each kind of teeth does an adult human have?
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incisors (8)
canines (4) pre-molars (8) molars (12) |
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What kind of teeth does a baby lack?
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molars
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What are the teeth of a baby called?
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milk or temporary teeth
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What are the teeth of an adult called?
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permanent teeth
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Why does a dog have large canines?
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dog is carnivorous.
Canines used for tearing meat |
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Why does a rabbit have long incisors?
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rabbit is herbivore.
incisor is used to tear grass/leaves |
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How many sets of salivary glands do we have?
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three sets
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Define saliva
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a mixtures of a slimy substance called mucus and enzymes.
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Define enzyme
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An enzyme is a substance produced by cells of a living organism which helps certain reactions to take place easily.
Enzymes are biological catalysts, i.e. they help a reaction to take place remain unchanges after the reaction. |
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What is a catalyst?
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CAtalysts help a reaction to take place, but remain unchanged after the reaction.
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what does the saliva do to te fodd in the mouth?
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The mucus softens the food.
Enzyme in the saliva helps to break down the starch in the food into sugar. The tongue moves the food from side to side and rolls it into a ball. |
