Cambridge Primary Science Yr4 Unit1-2

what is this called?

(a)  

what is this called?

(a)  

what are the functions of the skeleton?

• gives our body shape

• give us energy

• provide support to it

• help us to eat

Our ribcage protects our _____ and _____.

(a)  

The skull protects the (a)   .

We are able to move because we have (a)   that cover our skeleton.

Oue muscles (a)   on our bones to make them move.

When our ______ relax , our _______ contract and shorten,they pull down the bone in our lower arm. This allows oue arm to straighten.

(a)  

When our _______ relax , or ______ contract or shorten,they pull up the bone in our lower arm. This allows our arm to bend.

(a)  

Many animals,such as humans,have a column of bones that supports their bodies. This is known as (a)   .