BS 2 - The structure of bones

BS 2 - The structure of bones
1 / 16
volgende
Slide 1: Tekstslide
BiologieMiddelbare schoolhavoLeerjaar 1

In deze les zitten 16 slides, met interactieve quizzen, tekstslides en 1 video.

time-iconLesduur is: 45 min

Onderdelen in deze les

BS 2 - The structure of bones

Slide 1 - Tekstslide

Today's lesson
1. Check HW
2. Do paragraph 4.2 - The structure of bones
3. Exercise 2 pg. 72
4. Review questions

Slide 2 - Tekstslide

Bones and cartilage
The skeleton consists out of 2 types of tissue: 
Bone (bot) and cartilage (kraakbeen)

But..
What are bones made of?

Slide 3 - Tekstslide

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 4 - Tekstslide

Slide 5 - Tekstslide

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 6 - Tekstslide

baby is flexible because they have a lot of collagen in their bones
Old people break bones easier because they have less collagen.

Slide 7 - Tekstslide

Where do bones exist of?
A
Collagen and calcium phosphate
B
Cartilage and calcium phosphate
C
cartilage
D
collagen

Slide 8 - Quizvraag

Do the bones of older people have more collagen?
A
yes
B
no

Slide 9 - Quizvraag

Do the bones of baby's have more calcium phosphate?
A
yes
B
no

Slide 10 - Quizvraag

Cartilage has more collagen than calcium phosphate. This makes cartilage ...
A
flexible
B
strong

Slide 11 - Quizvraag

What material is in a nose?
A
Cartilage
B
Bone

Slide 12 - Quizvraag

What makes bone strong?
A
collagen
B
calcium
C
cartilage

Slide 13 - Quizvraag

What material is in this bone?
A
Cartilage
B
Bone

Slide 14 - Quizvraag

Your ear is made of....
A
cartilage
B
spongy bone
C
compact bone
D
marrow

Slide 15 - Quizvraag

Slide 16 - Video