Digetion System Flashcards
(28 cards)
Digestion
Breaking down food into smaller pieces
Organ
A part of the body made of tissues that work together
Organ system
A group of organs that work together
Catalyst
A substance that helps a reaction happens faster but isn’t used up
Enzymes
A protein that helps speed up reactions in the body
Diffusion
When liquid or gas spreads out to fill a space
Peristalsis
Muscle movement that pushes food through the digestive system
Why do we need our digestive system
-our cells need food to work
-the digestive system breaks foods into smaller parts so our blood can carry nutrients to the cell
Tongue & mouth
Takes in food and chew it
Salivary glands
Produces amylase
Osephagus
Carries food form mouth to stomach
Liver
Produces bile to aid digestion of fat
Stomach
-churns food
-adds hydrochloride acid to food
Gall bladder
Stores bile until its needed in small intestine
Colon
Absorbs water from food to blood
Large intestine
Prepares undigested food for egestion
Anus
Allows faeces to pass from body
What are the stages of human digestion in order
Ingestion
Digestion
Absorption
Assimilation
Egestion
Ingestion
Food enters digestive system through the mouth
Digestion
Complex food molecules being Brocken to simpler food molecules
Absorption
Products of digestion enters blood stream
Assimilation
the nutrients that are absorbed, are
converted into molecules for growth, repair and
defence in the cells.
Egestion
Waste products of digestion being removed from the body
2 types of human digestion
Physical digestion
Mechanical digestion
