4.2 Skeleton + posture

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

Unit 4 Jointed skeletons

Why do we have a skeleton?

Read basic 1

section endoskeleton page 86

section exoskeleton page 87/88

section hydrostatic skeleton page 90

Jellyfish, sponges and some types of worms have a ... skeleton

A skeleton that is found on the inside of the body is called an ...

Which of the following characteristics does not belong to an endoskeleton?

1. Made of living cells
2. Can grow and repair itself
3. Made of chitin
4. Found in vertebrates

Which of the following characteristics does not belong to an exoskeleton?

1. Found on the outside of the body
2. Animal needs to moult to grow
3. Made of chitin
4. Only found in water animals

LEARNING GOALS 4.2 

• You can give the name and function of the four basic parts of the endoskeleton.
  
• You can name the bones mentioned in figure 4.11.
  
• You can explain the function of the intervertebral discs between the vertebrae.
  
• You can describe a good posture.
  
• You can explain why it is important to have good posture.
  
• You can explain the double S-shape.
  

Which bones do you
already know?

The skeleton

look at page 91 and lets try and memorize a few of the names. You get 5 minutes :-)

skull

tibia

femur

radius

humerus

vertebrae

sternum

4.2 Your skeleton and posture

Learn the names of the bones of
the human skeleton by heart

SPINE / BACKBONE

• Double-S-shape
• Intervertebral discs (cartilage)
• Protects the spinal cord

Time to work!

• Read Chapter 4.2
  +
  
• Workbook excercises 1-8 (hw)
• Start new PIF for Chapter 4
• Update your PIF

ACTIVITY

• Read the blue box on page 94. 
• Improve each others posture in English!

How to lift things

Keep your back in double S shape!

how to sit

LEARNING GOALS 4.2 

• You can give the name and function of the four basic parts of the endoskeleton.
  
• You can name the bones mentioned in figure 4.11.
  
• You can explain the function of the intervertebral discs between the vertebrae.
  
• You can describe a good posture.
  
• You can explain why it is important to have good posture.
  
• You can explain the double S-shape.
  

DONE? Add the answers to the following questions to your note. 

• What is the growth plate? 
• Where do you think you can find the growth plate in your drawing?

COPY THE PICTURE TO YOUR NOTES.

For each part (except for the head, shaft & neck) , write down its function.