KS3 - Muscles & Movement

Describe how muscles, joints and bones work to move your body

Other Broader/Cross-curricular links – PSHE/Body/Self, PE, sports science

Starter: Have a think: are muscles like elastic bands? | Dispel misconceptions, ask them to think about models

Recap on bones, joints, ligaments, tendons.
Shoulder blade = scapula
Functions of bones are – protection, support
Where a bone meets (joint)
Softer bit on the end of the bone (cartilage)
The cushioning liquid on a join (synovial fluid)
Connects bone to bone (ligaments)
Muscle to bone (tendon)

Revision Worksheet & Questions

Main Activity
Muscles –long and stretchy?
Animation / video of muscle

Muscle fibre ‘model’. Can change shape. Remind about Antagonistic Pair
Is an elastic band a good model? How would you better represent a muscle?
Cardiac –heart, what is special about it?

Tendons can’t, ligaments can’t muscles can
Types of muscle - smooth, skeletal, cardiac

Match type of muscle worksheet + stick in book

Slide w/Q: What would happen if our skeletal muscles were replaced by tendons? (so heart still works etc!) – couldn’t move
Get them to write and articulate.

What would happen if all skeletal muscles were replaced by cardiac muscles?

Ext: if you need to make a muscle bunch up and get shorter, what do you need to use up? (energy)

Takeaway Question/Plenary:
How many muscles will you use on the way to break now?
To have them thinking that they use muscles to move and realise/value what they have learned.