1. Skeletal System

2. What’s the skeletal system?
The skeletal system is what keeps your body in shape, protects your vital organs, such as the heart, brain, and lungs, and enables you to move.

3. The Spine Made of separate bones called vertebrae
In between each vertebrae is a layer of cartilage that keeps the bones from rubbing up against each other
26 vertebrae in the spine

4. The Ribs
The breastbone, or the sternum, is linked to the bones which make up the ribs.
Ribs protect many internal organs on your chest
Most people have 12 pairs of ribs
The ribs are connected to the sternum by cartilage

5. Hands and Feet
Each hand has 27 separate bones connected by muscle and tendons
26 bones in each foot
Half the bones in your body are found in your hands and feet

6. Hips and Legs
Hip bones help us stand upright and move, and also support the body's weight
Each hip is made up of 3 bones called, ilium, ischium, and pubis .

7. The Arms
The Arm is made up of three bones called the, ulna, radius, and humerus
The lower bones are connected with the humerus at the elbow and the carpal bones at the wrist
At the shoulder there are two bones that form the shoulder joint

8. Joints
We can bend, swivel, stretch, pivot, and point. Our bodies can perform more than one kind of motion because we have joints.
Ball and socket joints allow twisting and turning movements
A hinge joint allows movement in a certain spot to take place

9. Inside a bone
A fully developed bone is made up of mineral salts, water and tissue.
There are two types of bone - compact and cancellate.
A compact bone is smooth and solid, while a cancellate bone is a much lighter structure.
The structure of the cancellate bone is similar to a honeycomb. All bones are a combination of cancellate and compact bone.