U4 B3 Joints

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

Today

• Recap: T4.2 ex. 7 and 8
  
• Connecting bones
• Moving bones
• Structure of bones
• Time for hw: T4.3 Ex. 7, 8, 9 and T4.7 – ex. 2, 3, 4
• End

B3 Joints and B7 The Structure of Bones

• Take off your jacket
  
• Put your things on your desk
  

       Book, notebook, pencil case

• Bag on the floor
  
• Read pages 22-24
• Read pages 54-56

Lessongoals

• 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.
• You can describe the relationship between the shape and function of bones.

Which of these is NOT a function of the skeleton?

1. Giving shape
2. Make movement possible
3. Keeping organs in their spot
4. Protecting organs

What substance in a bone gives it rigidity?

1. Collagen
2. Callogen
3. Calcium phasphote
4. Calcium phosphate

What are fontanelles?

1. The bendable bones of a baby
2. The bendable bones in a baby's skull
3. The holes in between the skullbones of a baby
4. A special type of fountain

Bone tissue is strong and rigid. .... tissue is bendy. What word should be on the dots?

Immobile connections

• Fused 

Bones that have grown into 1 bone

• Sutures

Bones that are very close to each other

Moving connections

• Cartilage
  

Layer of cartilage in between bones

Small amount of movement

• Joint

Convex bone moves in concave bone

A joint

Ball-shaped bone

Socket bone

ligament

joint capsule

synovial fluid

cartilage

Keep the bones of the joint together

lets the bones move smoothly (lubricates)

stops wear and tear

Types of joints

• Ball-and-socket joint (moves in various directions)
• Hinge joint (Moves in 1 direction only)
• Pivot joint (Moves around axis of the other bone

Your elbow is a ..

1. Ball-and-socket joint
2. Hinge joint
3. Pivot joint

Your knee is a ..

1. Ball-and-socket joint
2. Hinge joint
3. Pivot joint

The arrow points to a ...

1. Ball-and-socket joint
2. Hinge joint
3. Pivot joint

The arrow points to a ...

1. Ball-and-socket joint
2. Hinge joint
3. Pivot joint

The shape of a bone is related to the function of the part of the body where that bone is located.
How do you see this in the forelegs of a mole and a bat?

What you should do:

• Read pages 22-24 and 54-56
• Do 4.3 asgmt 7, 8, 9 and
• 4.7 asgmt  2, 3, 4
  

Done with the above?

• Work on the next basics
• Make other homework
• Read a book

Task 14/15 is:

U4 – B4 – ex. 1, 2, 3, 5 and 6

U4 – B5 – ex. 1, 2, 3 and 5

What you should do:

• Read pages 22-24 and 54-56
• Do 4.3 asgmt 7, 8, 9 and
  
• 4.7 asgmt 2, 3, 4

Done with the above?

• Work on the next basics
• Make other homework
• Read a book

Zw = Working with whispering

• Teacher is available for questions
• Only whisper with the student next to you
• Stay at your  desk

Tidy Duty

Today these people are on tidy duty

• Desks: empty and straight
• Chairs:  underneath the desks
• Floor: no rubbish