Skeletal System

Key Stage 1

The human skeleton.

A skeleton is all the bones inside an animal.

The skeleton is a group of bones that support an animal and help it move.

Singular Noun: Skeleton

Plural Noun: Skeletons

Adjective: Skeletal

The skeleton is made up of all the bones in an animal.

Muscles are attached to the bones in the skeleton that allows us to move.

The rib cage is part of the skeleton and this protects the heart and lungs.

The skull is part of the skeleton and this protects our brain.

Without a skeleton our bodies would be like jelly and we wouldn't be able to stand up or move about easily.


An elephant's skeleton showing the bones and tusks. Notice the trunk has no bones inside it.	A fish has a Backbone as part of its skeleton.

A crab has an exo-skeleton which means its skeleton is on the outside, not the inside of its body.	A dolphin's skeleton.

The skeletal system is an organ system in animals made of bones that work together to help the animal move and protect the vital organs.