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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Slide 1: Diapositive
BiologieMiddelbare schoolvwoLeerjaar 1

Cette leçon contient 15 diapositives, avec quiz interactifs et diapositives de texte.

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Planning
  • Planning coming weeks 
  • Quick recap last week
  • Basic 2: the structure of bones (10 min)

  • Demo practicum  (20 min)

Slide 1 - Diapositive

Planning coming weeks
Week
17 jan
B2 + B3
24 jan
B3 + B4
31 jan
Repetition + test

Slide 2 - Diapositive

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 - Diapositive

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 - Diapositive

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 - Diapositive

Slide 9 - Diapositive

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 - Diapositive

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 - Diapositive

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 - Diapositive