What I learned in science today...

What I learned in science about our bones..

I learned that if we did not have joints we would not be able to move we would be like a mannequin.

Two joints that we have.

We have Hinge joints the are elbows and knees..they are very stable... And we have Ball-and-Socket joints they are our hips and shoulders joints.

DID YOU KNOW

Elderly sometimes get arthritis.. that's because we have a fluid called Synovial and when you get older that fluid starts to fade and then its hard to move are hands. And now you know what I learned today in science :)