Share Digestives system
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Why do we need food?
We need food for energy , growth, repair and to stay healthy.
What is digestion?
Digestion is the process of breaking food into small particles that the body can absorb.
Why must food be digested?
Because large food pieces cannot enter the blood.
Where does digestion start??
Digestion starts in the mouth.
What is digestive tract?
It is the path food follows from the mouth to the anus.
What is the function of the mouth?
The mouth chews food and mixes it with saliva.
Why is saliva important?
It makes food easy to swallow and begins digestion.
How does food move down the oesophagus?
By muscle movements that push food down.
What is saliva ?
Saliva is a liquid in the mouth that softens food and starts digestion.
What is the function of the stomach?
The stomach mixes food with digestives juices.
What happens to food in the stomach??
Food is turned into a thick liquid.
What is the function of the small intestine??
It digests food completely and absorbs nutrients.
Where are nutrients absorbed into the blood?
In the small intestine.
Why is the small intestine very long?
To give enough time and space to absorb nutrients.
What is the funcion of the large intestine?
It absorbs water from undigested food.
Where is waste stored before leaving the body?
In the large intestine.
