KS3 Food and Digestion Key Words

27 terms by guwi 

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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

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