1. Skeletal System-Functions Provides shape and support Allows movement (provides a surface to which muscles attach) Protect delicate tissues and organs Storage of minerals (calcium and phosphorus) Produces blood cells

2. Bone Structure compact bone: hard and dense for strength –C–Composed primarily of minerals spongy bone: spaces for lower weight Marrow: forms blood cells veins and arteries: to bring nutrients to the cells nerves: to collect information from the tissue and to send information to the brain

3. Parts of Bone vein artery spongy bone marrow compact bone

4. Parts of Bone: Cross Section veins, arteries, nerves compact bone spongy bone bone marrow bone making cells

5. compact bone tissue nuclei of bone cells tubes where blood vessels and nerves go through

7. compact bone spongy bone

8. Bone Tissues

9. spongy

10. Bone Tissues compact

11. Bone Tissues marrow

12. JOINTS Joints: any place where two bones come close together 1.Immovable (skull) 2.Movable (hinge, ball & socket, pivot, gliding) What holds the bones together at the joints? ligaments

13. Type of Joint? shoulder/upper arm ball and socket

14. Type of Joint? ball and socket

15. gliding

16. gliding

17. immovable

18. pivot

19. pivot

20. hinge

21. hinge