1. The Skeletal System Master Welch

2. Bones

3. Bones Function Function Structure Structure Types Types Joints Joints Movement and body functions Movement and body functions

4. Bones 206 bones 206 bones Protects organs Protects organs Provides structure Provides structure Movement and body functions Movement and body functions

5. Bone Structure Living Living Osteoblasts Osteoblasts Compact bone Compact bone Spongy bone Spongy bone Marrow Marrow

6. Osteoblasts

7. Compact Bone

8. Marrow

9. Cartilage

10. Bone Growth Cartilage Cartilage Cartilage Hard bone Cartilage Hard bone

11. Bone Growth Growth plate Growth plate

12. Bones Skull Skull Vertebrate (backbone) Vertebrate (backbone) Rib cage Rib cage Large bones Large bones

13. Skull Fused joints Fused joints Acts like connected bone Acts like connected bone Separate at birth Separate at birth

14. Skull

15. Skull Protects brain Protects brain Eyes, mouth, nose, and ears Eyes, mouth, nose, and ears

16. Skull

17. Vertebrae Protects spinal chord Protects spinal chord Allow twisting and bending Allow twisting and bending

18. Vertebrae

19. Rib Cage Protects vital organs Protects vital organs Aids in breathing Aids in breathing

20. Rib Cage

23. Large Bones Produces blood cells Produces blood cells Stores fats Stores fats Provides support and allows movement Provides support and allows movement

24. Large Bones 1 5 4 3 2

25. Bones Bones Bones Bones Skull

26. Joints Fused Fused Sliding Sliding Gliding Gliding Ball and Socket Ball and Socket Hinge Hinge

27. Vertebrae Sliding joints Sliding joints Allow twisting and bending Allow twisting and bending

28. Gliding joints Hand and wrist – feet and ankles Hand and wrist – feet and ankles Gives greater flexibility Gives greater flexibility

29. Gliding joints

30. Ball and Socket Shoulder and Hip Shoulder and Hip Great circular mobility Great circular mobility

31. Ball and Socket

32. Hinge Elbow and knee Elbow and knee Flex and extend Flex and extend Gives stability Gives stability

33. Hinge

34. Skeleton Skeleton

35. Welcome to FOSS' Human Body Welcome to FOSS' Human Body Welcome to FOSS' Human Body Welcome to FOSS' Human Body

36. Closing Function Function Structure Structure Types Types Joints Joints Movement and Movement and body functions

37. Bones Function Function Structure Structure Types Types Joints Joints Movement and body functions Movement and body functions

41. Bones Skull Skull Vertebrate (backbone) Vertebrate (backbone) Rib cage Rib cage Large bones Large bones