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27 terms

KS3 Food and Digestion Key Words

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absorption
what happens when digested food particles pass from the digestive system into the bloodstream
acidic
has a pH less than 7, for example stomach acid
alkaline
has a pH greater than 7
amylase enzyme
enzyme responsible for the breakdown of starch
anus
the end point of the digestive system
balanced diet
range of nutrients needed to stay healthy
blood
fluid responsible for transporting substances from part of the body to another
body temperature
maintained temperature of body, in humans 37 _C
carbohydrate
group of energy-producing substances, for example starch and sugars
chemical digestion
digestion of food which involves chemicals called enzymes
digestion
the process by which nutrients from food are broken down and absorbed into the body
digestive system
the organs involved in digestion
egested
when undigested waste leaves the body via the anus
energy
ability to do work
enzymes
chemicals found in the digestive system, used to break down large particles into smaller pieces
faeces
undigested waste product which leaves the body via the anus
fat
substance found in food, used as an energy store and part of cell membranes
fibre
food used to keep waste moving through your digestive system
grow
increase in size
mechanical digestion
digestion of food which involves physical action to break food into smaller pieces, for example chewing
minerals
substances required in small amounts by the body
mouth
beginning of the digestive system where food enters the body
nutrients
substances in your food which are needed and used by your body
nutritional label
label found on food packaging which states the amount of each nutrient
protein
food needed for growth and repair of tissues, also used to make enzymes
recommended daily allowance (RDA)
suggested amount of each nutrient which is needed daily to stay health
vitamins
substances required in small amounts by the body