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Digestives system

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    Y5
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  • Why do we need food?
    We need food for energy , growth, repair and to stay healthy.
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  • What is digestion?
    Digestion is the process of breaking food into small particles that the body can absorb.
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  • Why must food be digested?
    Because large food pieces cannot enter the blood.
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  • Where does digestion start??
    Digestion starts in the mouth.
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  • What is digestive tract?
    It is the path food follows from the mouth to the anus.
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  • What is the function of the mouth?
    The mouth chews food and mixes it with saliva.
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  • Why is saliva important?
    It makes food easy to swallow and begins digestion.
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  • How does food move down the oesophagus?
    By muscle movements that push food down.
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  • What is saliva ?
    Saliva is a liquid in the mouth that softens food and starts digestion.
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  • What is the function of the stomach?
    The stomach mixes food with digestives juices.
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  • What happens to food in the stomach??
    Food is turned into a thick liquid.
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  • What is the function of the small intestine??
    It digests food completely and absorbs nutrients.
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  • Where are nutrients absorbed into the blood?
    In the small intestine.
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  • Why is the small intestine very long?
    To give enough time and space to absorb nutrients.
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  • What is the funcion of the large intestine?
    It absorbs water from undigested food.
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  • Where is waste stored before leaving the body?
    In the large intestine.
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