1. Skeletal System

3. Functions of the Skeletal System
Provides shape and support
Enables you to move
Protects your organs
Produces blood cells
Stores minerals and other materials until your body needs them

4. How many bones are there in the skeleton?
It depends on your age.
A newborn has 275
An adult has 206
Some of the bones a baby has fuse together, like the bones of a babies skull

5. Types of Skeletons Appendicular Any appendage Legs and arms Axial
Head and chest and spine

8. Bone Structure Compact Bone Hard and dense but not solid Spongy bone
Full of small spaces but strong
Marrow
Red found in most of our bones as a kid
makes blood cells
Yellow found in most of the bones in adults
Stores fat and energy reserves

9. Strength
Made of minerals just like rocks
As hard as a rock
Growth
Alive because they contain cells, tissues and nerves
Forms new bone tissue as you grow
Development
Skeleton is mostly made of cartilage
It is replaced with bone by the time you stop growing

10. Joints A place in the body where 2 bones come together
They allow bones to move in different ways
2 kinds
Immovable joints allow for little or no movement
Movable joints allow the body to make a wide range of movements
There are 230 movable joints in the body

12. Parts of a Joint Ligament
These are strong connective tissues that hold bones together
Cartilage
This covers the ends of the bones and keeps them from rubbing against each other
Fluid
This lubricates the ends of the bones allowing them to move smoothly over each other

13. Bone diagnoses
Fractures
Dislocation
Sprain
Arthritis
Osteoporosis

14. Fractures
A break in a bone

15. Dislocation
When the end of a bone comes out of its joint

16. Sprain
When ligaments are stretched to far and tear
in places

17. Arthritis
Disease of the joints that makes movement painful or impossible
Inflammation of the joint

18. Osteoporosis
A condition in which the bodies bones become weak and break easily

19. Fun facts about the Skeletal System to end on
Our bone is six times stronger than steel if both are of the same weight.
The size of the smallest bone is equivalent to the size of a rice grain.
Of the 206 bones in the skeletal system, 52 of them make both our feet, 52 in your hands and 14 your face.
After death, cartilage rots faster than bone. This is why the skulls of skeletons have no nose or ears.
The only bone in your body without a joint is in your throat.
Men’s bones are thicker than women's.