Samenvatting digestive system

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Samenvatting - digestive system

  • 1 Food and nutrients

  • What is food?
    any substance that can be eaten or drunk by animals or humans.
  • Where can food come from?
    plants or animals
  • What are plant-derived foods?
    roots, stems, leaves, fruit and seeds of certain plants
  • What kind of source of food can animals be?
    directly and indirectly 
  • Give examples of direct products they provide?
    Meat is an example of a direct product taken from an animal often bred for this purpose.
  • What are indirect products?
    products that an animal produce, eggs and milk
  • What are dairy products?
    foodstuffs produced from milk, like butter, cheese and yogurt 
  • What can you do with a tally chart?
    write down everything you drink and eat on ordinary school day
  • 1.1 nutrients

  • What are nutrients?
    the chemical substances that are present in the food we eat every day, the useful parts of food.
  • Why does our body need these nutrients?
    in order to perform properly
  • What do many foods from plants contain as well?
    dietary fibre
  • What is dietary fibre?
    the collective name for the indigestible parts of plants
  • What are the different functions for nutrients in our body?
      – Building blocks: for forming cells and tissues (especially for growth, development and repair of the body).
    – Fuels: provide energy for moving, maintaining body temperature and for growth, development and repair.
    – For storage: are stored in certain parts of the body.
    – For protection: keep you healthy.
  • Which six types of nutrients does food consist of?
    proteins, carbohydrates, fats, water, minerals (salts), and vitamins.
  • How are proteins used?
    - are essential for growth and repair, used as building blocks, e.g. to produce cytoplasm your body needs lots of protein.
    - proteins that are not used as building blocks are used as fuel for respiration 
  • Can proteins be stored?
  • What is among carbohydrates?
    glucose, types of sugars and starch
  • Where are carbohydrates used for?
    they provide fuel but may also be used for growth or for storage
  • Does food from animals usually contains small or large amounts of carbohydrates?
  • Where do fats serve for?
    as fuel in our body, but may also be used for growth and for storage
  • What happens when you eat more fat than is needed?
    it is stored, mostly beneath your skin
  • How many percent of your body weight does water make up?
  • What are the functions of water?
    lays important role in transporting substances through your body, most substances can only be transported when dissolved in water
  • How are minerals also known?
    as salts
  • What are the functions of minerals?
    growth and repair: calcium for strong bones
  • Are minerals daily needed small or large amounts?
    very small smounts
  • What are the functions of vitamins?
    growth and repair
  • What are they fat-soluble vitamins and what happens when you excess them?
    (A, D, E and K) may cause problems
  • What are essential vitamins?
    A, B, C, D and K
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Laatst toegevoegde flashcards

What are dental braces?
 a deice used in orthodontics to realign teeth 
What is tartar?
plaque that has been left on teeth for a long time and gone hard.
It gives plaque more surface area on which to grow and a much stickier surface to which it can adhere, this can lead to more tartar or even more serious conditions such as cavities or gm disease.
How can it be prevented>
– brushing your teeth twice a day in the correct way;
– not eating between meals more than three times a day
How is peridontitis usually caused?
by a build-up of plaque
What is peridontitis?
a advanced form of gum desease, gums become weakened and plaque forms pockets around the base of teeth, bacteria in plaque collect these pockets causing further destruction of gums..
As it spread to areas of the jawbone that support teeth, teeth can eventually become loose and fall out.
What is gum disease?
the gums become red and swollen and regular bleeding occurs when brushing or flossing.
What may bacteria in plaque also cause?
gum disease or peridontitis  
What is the maximum amount of times you should eat to not harm your teeth?
six or seven times a day
When do bacteria produce this acid?
when you are eating or just after you have eaten, many soft drinks also contain acidic substances that break down the enamel
What do these bacteria do?
they break down the enamel of the teeth. They use the sugar you eat as  form of energy and turn the sugar into acid, this acid slowly dissolves the enamel.