1. There are 206 bones in your body
Bones are different shapes and sizes to allow for different kinds of protection and movement.

2. Important for movement and making blood cells..
Bones are grouped into four different types, based on their shapes
A long bone is longer than it is wide and has areas of bone growth on the ends.
Important for movement and making blood cells..
Point to some bones that you would classify as long bones.
Femur (anterior view)

3. Short bones are shaped like blocks.
Bones are grouped into four different types, based on their shapes
Short bones are shaped like blocks.
Usually do not have a lot of calcium so that they are very flexible.
Point to some bones that you would classify as short bones.
Carpals
Hand (posterior view)

4. Flat bones protect tissues and organs
Your sternum and ribs are flat bones that protect your heart and lungs.
Rib cage (anterior view)

5. Irregular bones don’t fit into other shape categories
Irregular bones often have a specialized function that no other bone can do.
Mandible (anterior view)
What specialized functions does your mandible, or jawbone, have? What kinds of movements do you need your mandible to make? How many directions can you move your jaw in?

6. Find the major bones of the axial skeleton
Can you locate these bones on your own body?

7. Bones of the arm and hand move in a variety of ways
How many phalanges do you have on each hand? Both hands together?

8. The bones of the leg and foot are similar to those of the arm and hand
What similarities do you see between the structure of your arms and legs? Your hands and feet?

9. The axial skeleton makes up the center of the body
The bones of the axial skeleton run along the main vertical axis of the body. They hold you upright and protect your vital organs.
Which bones in your axial skeleton are immobile, or only move when neighboring bones move? What is the advantage of these bones not being able to move on their own?

10. The appendicular skeleton includes your arms and legs
Your arms and legs are appendages. They give you a way to move, and a way to move and change things in your environment.
What appendages does a dog have? A bird? A fish?

11. You arms meet your axial skeleton at the pectoral girdle.
Girdles are where the appendicular and axial skeletons come together
You arms meet your axial skeleton at the pectoral girdle.
Your legs meet your axial skeleton at the pelvic girdle.
What do we call the place where two bones meet?