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Unit 4: Support and locomotion B2
Planning
Planning coming weeks
Quick recap last week
Basic 2: the structure of bones (10 min)
Demo practicum (20 min)
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Biologie
Middelbare school
vwo
Leerjaar 1
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Items in this lesson
Planning
Planning coming weeks
Quick recap last week
Basic 2: the structure of bones (10 min)
Demo practicum (20 min)
Slide 1 - Slide
Planning coming weeks
Week
17 jan
B2 + B3
24 jan
B3 + B4
31 jan
Repetition + test
Slide 2 - Slide
Learning goals
You can describe the structure of bone tissue and cartilage tissue.
You can describe how the composition of the bones changes during a person’s life.
Slide 3 - Slide
What is not a function of the skeleton?
A
Gives support and gives shape
B
The skeleton helps us think
C
Protects organs
D
Helps is move together with muscles
Slide 4 - Quiz
The skeleton is a ...
A
organism
B
organsystem
C
organ
D
tissue
Slide 5 - Quiz
The cat is a ...
A
Plantigrade - walks on the soles of the feet
B
digitigrade - walks on the toes
C
unguligrades - walks on hooves
Slide 6 - Quiz
Bones and cartilage
The skeleton consists out of 2 types of tissue:
Bone (bot) and cartilage (kraakbeen)
But..
What are bones made of?
Slide 7 - Slide
Structure of bones
Bones exist out of
calcium phosphate
(=kalkzouten) and
collagen
(=lijmstof).
Calcium phosphate
makes the bone strong and rigid.
Collagen
makes the bone flexible
Slide 8 - Slide
Slide 9 - Slide
Changes of bone tissue
The skeleton of a baby consists mostly of cartilage tissue.
During growth, most of the cartilage changes to bone.
When you get older:
--> Amount of collages decreases
--> amount of calcium phosphate increases.
Slide 10 - Slide
baby is flexible because they have a lot of collagen in their bones
Old people break bones easier because they have less collagen.
Slide 11 - Slide
Where do bones exist of?
A
Collagen and calcium phosphate
B
Cartilage and calcium phosphate
C
cartilage
D
collagen
Slide 12 - Quiz
Do the bones of older people have more collagen?
A
yes
B
no
Slide 13 - Quiz
Do the bones of baby's have more calcium phosphate?
A
yes
B
no
Slide 14 - Quiz
Demo practicum
We are going to look at the collagen and calcium phosphate in bones.
Slide 15 - Slide
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