Digestive system Flashcards
1
Q
Digestion
A
The break down of food
2
Q
Why do we need it
A
Our body needs energy to carry out its functions
Digestion breaks down food into nutrients which can enter cells in our bodies
3
Q
Protein functions
A
To make enzymes
To grow and repair muscles
4
Q
Carbohydrate functions
A
To provide energy
Fibre aids peristalsis
5
Q
Fat functions
A
Insulation
Energy source
6
Q
Digestion sequence of events
A
- Ingestion: Intake of food
- Digestion: Physical and chemical breakdown of food.
- Absorption: Nutrients are absorbed into the blood stream.
- Egestion: The removal of undigested waste through the anus.
7
Q
Chemical digestion
A
Uses enzymes and chemicals
8
Q
Enzymes
A
“Biological catalysts that speed up chemical reactions.”
