The locomotor system

THE LOCOMOTOR SYSTEM

THE LOCOMOTOR SYSTEM

Every time we move, we use our bones, joints and muscles.

Together, these parts of the body make up the locomotor system.

THE LOCOMOTOR SYSTEM

Some of our bones proct organs such as the heart and brain, and others support our body.

THE LOCOMOTOR SYSTEM

Muscles are attached to our bones.

They’re made of a strong, flexible tissue and they move our bones when they contract and relax.

THE LOCOMOTOR SYSTEM

Joints help make our skeleton flexible.

They join bones together and allow us to bend and turn our body.

SHORT BONEThey provide support

and stability.

FLAT BONEThey proctect our

internal organs.

LONG BONES

They are used for movent.

FIXED JOINTSThey do not

move.

SEMI-FEXIBLE JOINTS

They allow a little movement.

FLEXIBLE JOINTSThey allow our body to move.

VOLUNTARY MUSCLES

They are controlled by our brain. Our brain sends a signal to these muscles when we want to move.

INVOLUNTARY MUSCLES

They move automatically.

http://www.bbc.co.uk/schools/scienceclips/ages/8_9/moving_growing_fs.shtml

Quiz

Classify the bones, muscles and joints.

elbowhumeruspelvis

vertebraeExample

The elbow is a flexible joint.

http://www.sciencekids.co.nz/gamesactivities/movinggrowing.html

Summary1.Bones proctect internal organs and_____________the body.2.Muscles move bones when they ___________and______________.3.Joints join_______________together and help make the skeleton.4. There are ___ types of joints: ______joints, semi-flexible joints and _______joints.5. ____________muscles and _________ muscles are types of muscles.6. The knee cap or patella is a ___________bone.7. The ______________ is a long bone.8. Short bones provide ________ and ___________ to our body.9. The ___________ is an involuntary muscle because …10. ___________ allow a little movement. The vertebrae in our body are joined by ________________joints.

Time to reflect.

•What will happen if you place a thin, clean chicken wing bone in a jar with vinegar?

•Clue: vinegar removes calcium.

Solution

The bones are strong due to high calcium content; vinegar removes calcium from the bone and makes it soft.

That’s why you should have enough calcium in your diet.