Unit 4: Support and locomotion B3

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

Planning

• See what you remember from last week
• Basic 3: Joints
  
• Homework
  

Learning goals

*You can describe the types of joints.

*You can describe the structure of a joint.

*You can describe how a ball-and-socket joint, a hinge joint and a pivot joint work

But first.. what do you remember?

Do you remember what the 4 functions are of the skeleton?

What do bones exist off?

1. collagen
2. cartilage
3. calcium phosphate and cartilage
4. calcium phosphate and collagen

Botten consist of calcium phosphate and collagen.

Why is it important bones have both of the substances?

in which figure do you see cartilage?

fig. 1

fig. 2

what do the extracellular material of cartilage mainly consist of?

1. calcium phosphate
2. Collagen

Different kind of connections

Bones are connected to eachother. This makes it possible for you to move your body.

Immobile connections

1. fused together (vergroeid)

2. sutures (naadverbinding)

No movement is possible between fused bones or between bones attached by a suture.

mobile connections

1. Cartilage 

2. joints

The cartilage and the joints allow the ribcage to expand and contract as you breathe.

Structure of a joint

A joint is a connection between two bones.

Convex bone & concave bone

The cartilage lets the bones move smoothly and stops wear and tear.

The joint capsule keeps the bones together

The ligaments keep bones in place.

Synovial fluid lets the bones move smoothly

Types of joints

1.ball-and-socket joint

2. pivot joint

3. hinge joints

(Home)work Thursday March 30

Read page 22-24 UNDERLINE words and sentences that you don't understand.

Bones are connected in several ways. Which connections allow movement?

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

Cartilage

Sutures

Synovial joint

Fused together

A little movement possible

No movement

No movement

Lots of movement possible

Fused

Suture

Cartilage

Joint

Breastbone and ribs

Pelvis and thighbone

Lumbar vertebrae

Humerus and ulna

Thighbone and fibula

Bones in the skull

Vertebrae in the sacrum

(Home)work Thursday March 30

Use page 22-24 

Do ex 2-4