The cranium protects your brain. Axial bones keep you up right. Appendicular bones help your movement.
The ribcage protects your liver, heart and lungs. Some pairs are floating and some pairs are fixed. Vertabrae protect your spinal cord.
Joints keep your bones together. Hinge joints can move in two possible ways up and down. There are two different types of joints, ball and socket and hinge
Arms and legs are very similar structures. Your longest bone is the femur. The Femur is connected to the fibula and tibia.
Taking care of our bones is very easy- all you have to do is drink lots of milk and dairy products and get vitamin D.