4.3 - Joints

• Biologie
• Middelbare school
• havo
• Leerjaar 1

Unit 4 - Support and locomotion

4.3 Joints

*little tric

img-9gag-fun.9cache.com

dansen onder rontgen-camera

Why is there calciumphosphate in our bones?

1. Flexibility
2. Rigidity
3. So we don't have to drink milk (store calcium)
4. There's no calcium in our bones

Why is there 'collagen' in our bones?

1. Flexibility
2. Rigidity
3. To stay young
4. There's no collagen in our bones

What types of joints
(connection between bones)
exist in your body?

Immobile   --    Mobile

Connection between seperate bones

1. Fused vertebrae

2. Sutures

3. Cartilage

4. (synovial) joints

Welke botverbindingen kunnen bewegen?

1. Fused
2. Suture
3. Cartilage
4. Joint

Cartilage between breastbone and ribs

Cartilage between vertebrae

*you're taller in the morning than in the evening, how come? 

• Trucje met
  rolgewricht!

1. ball-and-socket joint

2. Pivot joint

3. Hinge joint

Grapje met hand omdraaien!?

Which connection is most flexible?

1. Pivot (lower arm)
2. Connection with cartilage (ribs)
3. ball-and-socket (hip)
4. Hinge (finger)

Hipjoint

Socket-shaped bone

Cartilage layer

Ball-shaped bone

Synovial fluid (smeermiddel)

Joint capsule 

Ligaments (gewrichtsbanden) 

What material is indicated at the tips of the chicken bone?

1. Bone
2. Skin
3. Cartilage
4. Muscle

Basisstof 4.3 (Hw)

* 1.4 in Learnbeat - scan the text, make assignments 

- Je lengte thuis laten opmeten net voordat je gaat slapen

en 's ochtends als je net wakker bent. Schrijf deze ergens op

Als dokter naar Röntgenfoto's kijken

femur = thighbone

Tekst

Read page 22-25 in book B

Maak opdr. 1-3, 5-7

Hoe lang was je voordat je ging slapen? (cm)

100180

Hoe lang was je toen je net wakker werd?

100180

Kraakbeen tussen borstbeen en begin ribben

Kraakbeen tussen wervels

* je bent 's ochtends langer dan 's avonds, hoe kan dat?

Hoe veel krimp jij dus elke dag?
(LET OP: in milimeters)

050