Unit 2 Nutrition and digestion

1 / 38
volgende
Slide 1: Tekstslide
BiologieMiddelbare schoolvwoLeerjaar 2

In deze les zitten 38 slides, met tekstslides.

Onderdelen in deze les

Slide 1 - Tekstslide

Introduction Nutrition and Digestion 
Voedingscentrum.nl​

Maak een account aan​
Vul dan vervolgens je dagboek in voor:​
Mijn eetmeter: vul hem in voor wat je gisteren gegeten en gedronken hebt​
Mijn beweging​
Mijn BMI (optioneel) ​
Schrijf een korte samenvatting van je uitkomsten in je schrift​
Homework: bring a package of a product you like to eat to next class 






Slide 2 - Tekstslide

Slide 3 - Tekstslide

Slide 4 - Tekstslide

Unit 2 Nutrition and digestion

Slide 5 - Tekstslide

Today
  • Talk about 2.1 Nutrition and digestion 
  • Make some questions in your workbook

Slide 6 - Tekstslide

learning objective
  • You can name the functions of nutrients in foods.
  • You know 6 groups of nutrients with their functions and characteristics.

Slide 7 - Tekstslide

Nutrients: usable components in food
Dietary fibre: are indigestible parts of the plants 
vegetable products
Animal products
Foodstuffs

Slide 8 - Tekstslide

Function of Nutrients
  • Building blocks: grow/develop/repair
  • Fuels: by combustion in cells to provide energy
  • reserves: to store up
  • protection: to stay healty  

Slide 9 - Tekstslide

6 groups of nutrition's.
What's on your package?
carbohydrates
fats
proteins
minerals
vitamins
Water

Slide 10 - Tekstslide

Carbohydrates
  • includes: glucose, sugars, starch, glycogen
  • at first they are used as fuel
  • than: buildingblocks and reserves
  • glucose high: converted into glycogen                                                                           and stored in liver and muscles.
  • glucose drops: glycogeen converted into  glucose and released into the bloodstream

Slide 11 - Tekstslide

fats
  • primarily used as fuel 
  • also as buildingblock or reserves
  • reserves are stored beneath your skin
  • the subcutaneous fatlayer becomes                                                     thicker.
  • mostly you eat more fat than you need
Te veel vet -> slechtere werking

Slide 12 - Tekstslide

Proteins
  • Important buildingblocks: 
  • for example when cytoplasm is formed
  • as Fuel
  • Which foodstuffs contains proteins?
  • beans, yoghurt, cheese, eggs, redmeat,                                                chicken, fish, tofu 

Slide 13 - Tekstslide

Food that contain a lot of protein

Slide 14 - Tekstslide

Water
  • Your body is made up of 60% water
  • has a key role in transporting substances around your body
  • most substances can be only transported properly if they are dissolved  

Slide 15 - Tekstslide

Minerals (or salts)
- Buildingblocks. Like calcium for strong bones
- For protection
- not too much each day

read: '5000 deaths anually because                                                                        of too much salt': 

Slide 16 - Tekstslide

Vitamins
  • buildingblocks and protection
  • without you will become ill
  • consuming large quantities will make you ill as well
-A: producing skin and seeing well
-B12: Red bloodcells
-C: resistance
-D: Strong bones

Slide 17 - Tekstslide

Time to make some questions!
Read p.88 to 91
Make questions 1 to 3 , 5, 6, 7, 9
4 is optional

Finished? Try question 10!

Slide 18 - Tekstslide

Slide 19 - Tekstslide

2.2 the digestive system
digestive system
excists of an intestinal tract
to let nutriens be absorbed into the bloodtream
glucose, minerals, vitamines, water
proteins, carbohydrates, vets have to be digested first
digestion =  converting products to be able to absorb into the bloodstream

Slide 20 - Tekstslide

Slide 21 - Tekstslide

The route through the digestive tract:

  1. oral cavity                            tongue and salivary glands
  2. oesophagus
  3. stomach
  4. duodenum                         gall bladder, liver and pancreas
  5. small intestines
  6. large intestines                 appendix
  7. rectum
  8. anus

Slide 22 - Tekstslide

Slide 23 - Tekstslide

Enzymes

Slide 24 - Tekstslide

Peritalsis & peristaltic movement

Slide 25 - Tekstslide

What to do in class
  • Make a summary of 2.1; including a table nutrients/function
  • Make the exercises of 2.1


Homework next week: summary 2.1 
timer
1:00

Slide 26 - Tekstslide

Today
  • Discuss 2.3 Healthy food 
  • Add your foodlist in the website or app; see page 40 exercise 2 of your workbook
  • Make a food advice for your neighbour in his or her notebook
  • Check and correct your work 2.1 and 2.2
  • Did you make a summary of 2.3?
  • Make the exercises of 2.3
timer
10:00

Slide 27 - Tekstslide

2.3 the digestive organs 

Slide 28 - Tekstslide

the oral cavity, pharynx and oesophagus

what are the names of the glands together? what do they do?
  • salvary glands produces salvia: containing water, enzymes and mucus

Slide 29 - Tekstslide

stomach
  • circular + longitudinal muscle for constantly movement
  • pyloric sphincter is a circular muscle who close off the stomach
  • the gastric gland produces gastric juices: containing: water, enzymes to digest proteins and hydrochloric acid to kill germs  

Slide 30 - Tekstslide

  • liver produces bile (gal)
  • bile is temporarily stored in the gall bladder
  • bile passes through the bile duct when necessary
  • bile emulsifies fats to make it easier for enzymes to digest.

Slide 31 - Tekstslide

Slide 32 - Tekstslide

  • The wall of the intestines contains intestinal glands. They produce intestinal juice.
  • various enzymes digest carbohydrates, fats and proteins
  • the wall is convoluted, the intestinal folds in turn have protrusions called intestinal villi. 
  • the wall of the intestinal villi is very thin. nutrients can pass easily 

Slide 33 - Tekstslide

  • direct after the small intestines the caecum. (blinde darm). 
  • the protrusion is called the appendix.
  • inflamed in appendicitis; the appendix will be surgically removed. 
  • In the large intestine water is extracted from the pulp. 
  • If not -> Diarrhea
  • Only undigested residues left over
  • Bacteria are able to digest some cellulose and turn is into glucose
  • glucose is absorbed into the bloodstream.  

Slide 34 - Tekstslide

2.4 Healty food
  • What  is the basis for healty eating?
  • The basic for healty nutrition is variation
  • Also the food has to be safe. Not contaminated with germs. 
  • Food poisoning: germs, bacteria, chemicals

Slide 35 - Tekstslide

  • omega 3 for your health
  • containing harmful substances because of environmental pollution.
  • Seespiracy: 2021 netflix 

Slide 36 - Tekstslide

Advice for healty eating
  • Wheel of five: each part for                                                                     daily basis
  • saturated fats: animal fat
  • unsaturated fats: fish and                                                                           vegetable oil 

Slide 37 - Tekstslide

Slide 38 - Tekstslide