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L8: Absorption and Villi
HAVE READY:
-HW page 27 WB
-LessonUp
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Biologie
Middelbare school
havo, vwo
Leerjaar 2
This lesson contains
18 slides
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interactive quizzes
,
text slides
and
1 video
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Lesson duration is:
45 min
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Items in this lesson
HAVE READY:
-HW page 27 WB
-LessonUp
Slide 1 - Slide
Feedback & Test
Food diary or Lab report
Deadline final report: 20 December
Slide 2 - Slide
LESSON 8
Slide 3 - Slide
Slide 4 - Slide
Slide 5 - Slide
Kerboodle questions p60
1.
A. Carbohydrates
B. sugars
C. proteins, amino acids
D. vitamin C
E. fibres
F. reserve
Slide 6 - Slide
Slide 7 - Slide
Slide 8 - Slide
until now:
lesson 1: nutrients
lesson 2: nutrient sources and uses
lesson 3: lablesson
lesson 4: malnutrition (types)/balanced diet
lesson 5: fases / mechanical digestion
lesson 6: chemical digestion
lesson 7: chemical digestion
Slide 9 - Slide
Esophagus
Liver
Large intestine
Gall bladder
Stomach
Pancreas
Small intestine
anus
Slide 10 - Drag question
Ingestion
Mechanical digestion
Chemical digestion
Absorption
Egestion
MOVING THE FOOD INTO YOUR MOUTH
BREAKING THE FOOD INTO SMALLER PIECES.
THIS IS DONE BY YOUR TEETH
BREAKING THE FOOD INTO EVEN SMALLER PIECES.
USING ENZYMES TO BREAK DOWN THE FOOD MOLECULES.
the movement of nutrients from the digestive system to the blood
The passing out of indigestible food through the anus, in the form of faeces.
Slide 11 - Drag question
today lesson 8: absorption
-Small intestine
-food had to pass trought the wall into the blood
contains millions of tiny, finger like processes called :
Villi
Slide 12 - Slide
Slide 13 - Slide
Villi
Slide 14 - Slide
Slide 15 - Video
CHARACTERISTICS OF THE VILLUS:
- LARGE SURFACE AREA (MORE CONTACT MORE ABSORPTION)
- ONE CELL LAYER THICK (THIN WALLS FASTER ABSORPTION)
- GOOD BLOOD SUPPLY (FAST TRANSPORT OF NUTRIENTS TO THE REST OF THE BODY)
Slide 16 - Slide
Large intestine
-Mainly fibre, dead cells, bacteria and water
-Water absorbed in the blood
-Solid waste (feaces) stored in the rectum
Egestion--> passing out of indigestible food
Slide 17 - Slide
HW FOR LESSON 9:
GO TO THE Kidshealth
LINK
:
- READ THE ARTICLE
- WATCH THE MOVIE
- DO THE QUIZ, WORD-FIND AND ACTIVITY
- WB page 28
Slide 18 - Slide
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