4.2 Your skeleton and your posture 1HVTTO

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

4.2 Your skeleton and your posture

• Jacket in your locker
• Put your things on your desk

       Laptop/Book

       Notebook, pencil case

• Bag on the floor
  
• Read pages 91-93

Lessongoals

• Remember: I can label the skull, spine (backbone), rib cage and limbs correctly on a simple diagram of the human skeleton.
• Understand: I can explain in my own words what the main functions of the spine and the intervertebral discs are, in at least three clear sentences.
• Understand: I can describe the double S-shape of the spine and explain why this shape is important for good posture and shock absorption, using one example.
• Apply: I can look at someone’s sitting or standing position and give at least three simple instructions to improve their posture.

Homework 4.2

Asgmt 9-17

This animal has ...

1. an endoskeleton
2. an exoskeleton
3. a hydrostatic skeleton
4. no skeleton

This animal has ...

1. an endoskeleton
2. an exoskeleton
3. a hydrostatic skeleton
4. no skeleton

This animal has ...

1. an endoskeleton
2. an exoskeleton
3. a hydrostatic skeleton
4. no skeleton

This animal has ...

1. an endoskeleton
2. an exoskeleton
3. a hydrostatic skeleton
4. no skeleton

This animal has ...

1. an endoskeleton
2. an exoskeleton
3. a hydrostatic skeleton
4. no skeleton

This animal has ...

1. an endoskeleton
2. an exoskeleton
3. a hydrostatic skeleton
4. no skeleton

Think-Pair-Share

• Think: Work on the assignment on your own.
• Make a list: Which (English) names of bones in your body do you know?

• Pair: Discuss and compare with your neighbour, improve your answer
• Share: Talk about given answers during plenary session.

Ribcage

Protects lungs and heart<div><br></div>

Backbone/spine

Protects the spinal cord

Torso

The limbs and skull are connected to the torso

Limbs

the arms and legs are limbs, they are used for locomotion

Important parts

Skull

<div>Contains and protects the brain</div>

vertebra

femur

skull

breastbone

rib

pelvis

Why have a skeleton?

Functions

The skeleton performs 4 functions:

1. Rigidity and sturdiness
2. Makes movement possible
3. Protects organs
4. Give shape to the body

Some bones contain bone marrow.<div>The bone marrow makes the cells of your blood</div>

5?

Though it needs the muscles to do this!<div>But muscles need the bone to pull on</div>

!

Think-Pair-Share

• Think: Work on the assignment on your own.
• Choose one on the bad postures in the image
• Write: How does one get such a posture?
• Write: What makes this posture bad?

• Pair: Discuss and compare with your neighbour, improve your answer
• Same posture: Compare and improve
• Different posture: discuss if you agree
• Share: Talk about given answers during plenary session.

Why is good posture important?

Posture

• Arises at young age
• When grown up, hard/impossible to change
• What is good posture?

Different postures

The spinal column

Good posture, helps prevent (back) pain
The spine has 2 mechanisms that help

• Double-S-shape
• Invertebral discs

Backmuscles have a big job in keeping this shape.<div>Works as a shock absorber</div>

<div>Can move slightly allowing you to bend your back.</div><div>also helps absorb shocks.</div><div><br></div>Invertebral disc = anulus fibrosus<div>gelatinous core = nucleus pulposus</div>

These words I'll add to my PIF

00:10

How can this woman improve her sitting posture

What you should do: 4.2

• TB: Pages 91-95
• WB: Asgmt 9-17 
• Lt: Asgmt 1-9

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Do other homework
• Read a book

Zs = Working in Silence

• No asking questions
• Silent, don't disturb anyone
  
• Stay at your  desk

What you should do: 4.2

• TB: Pages 91-95
• WB: Asgmt 9-17
• Lt: Asgmt 1-9

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• 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

3 people each lesson

• Desks: empty and straight
• Chairs:  underneath the desks OR end of day: on the desks
• Floor: no rubbish