A the skeleton

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 1

PLANNING

- Overall planning 

- Introduction 'Bones'

- Work in learn beat 

- Discuss exercises 

SKELETON

4 FUNCTIONS OF THE SKELETON:

1. Shape 
2. Move(ment)
3. Protection
4. Standing upright  

Standing upright + shape

• We can't stand up straight or even lift our head without our bones.
  
• Without them we would be a pudding.
  

MOVEMENT

• Because our muscles pull on bones and the bones then move.
  
• Our muscles are attached to the bones with tendons.

PROTECTION

• Important organs are protected by bones.
  
• Like your lungs, heart and brain  

STORAGE OF MINERALS AND FATS

• The bones stores fats and minerals (calcium). 

MAKE BLOOD

• The bone marrow of larger bones can produce bloodcells.
  
• Platelets, red blood cells and white blood cells 

Welcome

On your table: 

- MacBook

- notebook 

- pencil case

Today's planning

Lesson 1 (Finish 'A skeleton')

Recap last week

Finish assignments of 'A skeleton'

Check answers

Lesson 2 (Start 'B bones and cartilage')

Instruction on bones and cartilage 

Start assignments of 'B bones and cartilage'

Which bones do you remember?

Which bones do you remember?

Waar kan je lichaam door bewegen

1. Alleen door botten
2. Door botten en spieren samen
3. Alleen door spieren

Al je botten in je lichaam vormen samen het:

1. schedel
2. beenderstelsel of skelet
3. wervels
4. bekken

Het skelet van een volwassen mens bestaat uit ongeveer uit:

1. 500 botten
2. 206 botten
3. 350 botten
4. 150 botten

What are the 4 functions of the skeleton?

Get to work:

• Go to somtoday --> biology --> this lesson --> click the link
  
• Go to: A Skeleton
• Read + make 2 and 4

Learnbeat unit:

Movement

B. Bones and cartilage

Today's planning

Lesson 1 (Finish 'A skeleton')

Recap last week

Finish assignments of 'A skeleton'

Check answers

Lesson 2 (Start 'B bones and cartilage')

Instruction on bones and cartilage 

Start assignments of 'B bones and cartilage'

Skeleton

Consist of 3 parts: head, torso, limbs

Has two different types of tissue: 

- Bone tissue (botweefsel) 

- Cartilage tissue (kraakbeenweefsel)

Movement

§2 Bones & Cartilage

Bones

Give strength, let us move and stand upright

Contain calcium phosphate and a bit of collagen

Cartilage

Firm, but very flexible.

Contains a lot of collagen

Protects bones from damage and makes sure movement is possible.

Bone tissue

Cartilage tissue

Cartilage tissue (kraakbeenweefsel):

- cellen in groepjes bij elkaar

- elastische tussencelstof

- vooral collageen

Bone tissue (botweefsel):

- cellen in kringen om bloedvaatjes

- harde tussencelstof

- vooral kalkzouten en collageen

A change in bone tissue

When younger --> more collagen, less calcium phosphate in bones

When older --> more calcium phosphate, less collagen in bones

Welke grafiek is dan juist?

What makes bone flexible?

1. collagen
2. calcium
3. cartilage

What substance makes bone strong?

1. collagen
2. calcium phosphate
3. cartilage

comparing skeletons

The skeleton can tell us something about 

-where an animal lives

- what it eats

- what it looked like in the past

Protection

Sommige delen van het lichaam bieden bescherming.&nbsp;<div>Welke delen denk jij?</div>

Schedel: klopt!&nbsp;<div>De schedel beschermt de hersenen&nbsp;</div><div>tegen botsingen, als een helm.&nbsp;</div>

Nekwervels: klopt!<div>Ze beschermen de <b>zenuwen</b> van en naar de hersenen.</div>

Borstkas: klopt!<div>Dit beschermt de zachte en weke<b> ingewanden </b>zoals het hart, de darmen en de longen. Anders zou alles uit je lichaam zakken! Jakkes!&nbsp;</div>

Botten: nee<br><div>Dit geeft stevigheid aan het lichaam. de speieren zitten aan de botten vast, en zo kunnen de botten bewegen.&nbsp;</div>

(Hoef)nagels: klopt!<br><div>De nagels beschermen de poten tegen beschadiging en verwonding.&nbsp;</div><div>Bij sommige dieren zijn de nagels zelfs een wapen!&nbsp;</div>

Get to work

Make 1 to 3 of 'B bones and cartilage'