8A Food and Digestion Flashcards
Name all 6 nutrients / substances the body
carbohydrate, protein, vitamins, minerals, fibre, water
Give 2 examples of carbohydrates
startch, sugars
WHy is protein needed in teh body
for growth and repair
Why is calcium needed?
for health - strong bones
What is carbhydrate used for by the body
for energy
What is the chemical reaction that releases energy in living things called?
Respiration
What is fibre use for in the body?
stops constipation/ keep digestive system moving
What is energy measured in?
kilojoules
What does soluble mean?
substance can dissolve
What is it called when substances are unable to dissolve
insoluble
What do enzymes do in the digestive system
They turn insoluble substances into soluble substances so the body can absorb them
What do enzymes do to starch?
turn them into glucose
What is ingestion?
eating food
Name the orans that food passes through on its journey through the digestive system
Mouth, oesophagus, stomach, small intestine, large intenstine, recrum, anus
Where is saliva produced?
salivary glands
What nutrient do enzymes in the saliva break down?
starch into glucose
How does the oesophagus move food down?
Muscles contract to squeeze the food down
What happens to food in the stomach?
What are villi?
Why does the small intestine have villi?
What is absoption?
Why are the walls of the small intestine only 1 cell thick?
What are faeces?
Undigested food
What is egestion?
Removal of feaces from the body
