THE LOCOMOTOR SYSTEM
It’s made up of bones, joints and muscles.
We have 600 muscles. They are flexible
and elastic.
We have 206 bones. They are rigid
and hard.
At the joints tendons attach muscles to the bones.
CIRCULATORY SYSTEM
Our circulatory system transports nutrients and oxygen.
It is made up of heart, blood and the blood vessels.
The blood is a red liquid. It travels in
thin tubes called blood vessels.
The
heart is a muscle. It works day and night.
No hay comentarios:
Publicar un comentario