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

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

Contains and protects the brain

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.

The bone marrow makes the cells of your blood

5?

Though it needs the muscles to do this!

But muscles need the bone to pull on

!

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.

Works as a shock absorber

Can move slightly allowing you to bend your back.

also helps absorb shocks.

Invertebral disc = anulus fibrosus

gelatinous core = nucleus pulposus

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