Chapter 1 Health And Lifestyle Flashcards
(50 cards)
What is the point of digestion
Break down insoluble food molecules to small soluble ones so that they can be absorbed into the blood stream
What does bacteria feed on?
Fibre
Where is bacteria found in the digestive system
Gut
What is bacteria in digestion needed for
Make important vitamins e.g. vitamin K
What does the pancreas do
Makes enzymes
What does the liver do in digestion
Makes bile
What does the gall bladder do
Stores bile
What does the bile duct do
Transports bile from the ball gladder to small intestine
What is the small intestine for
Digested food is absorbed into the blood
What is the large intestine for
Water and minerals are absorbed into the blood here
What happens in the mouth in the digestion process
Food is chewed
What do the salivary glands do
Add extra enzymes
What is the oesophagus for
Carries food to the stomach
What is the stomach for
Churns food and starts the chemical digestion of proteins
What happens in the rectum
Stores faeces
What happens in the anus
Releases faeces
What are enzymes and what do they do
Special proteins that break doen insoluble molecules of nutrients into soluble molecules.
What are enzymes known as
They are known as biological catalysts that speed up digestion without being used up
What do carboghydrases do?
Speed up digestion of carbohydrates which become sugar
What do proteases do?
Speed up digestion of proteins which become amino acids
What do lipases do
Speed up the digestion of lipids which become fatty acids and glycerol
Carbohydrates role in the body
Main source of energy
Lipids role in the body
Fats and oils provide energy
Proteins role in the body
Growth and repair of cells and tissues
