1. Introduction to the Skeletal System 5 th Grade

2. Are bones in your body alive? What are they made of? YES! The bones in your body are alive – Made of tissues that have cells that take in nutrients and use energy

3. Skeletal System is the FRAMEWORK of your body: What its 5 major functions?

4. 5 Major Functions of the Skeletal System 1)Gives shape and support to your body 2)Protects your internal organs 3)Muscles are attached to the bone and help bones move 4)Blood cells that transport oxygen through our body are created inside bones 5)Has large quantities of calcium and phosphorus

5. What are the 2 types of bone tissue? Compact Bone Tissue: Spongy Bone Tissue:

6. Spongy Bone Tissue Located at the end of long bones Has many small open spaces to make your bones lightweight

7. What is in the center of long bones? Large openings called CAVITIES

8. The cavities and spaces in spongy bone are filled with MARROW

9. Red vs. Yellow Bone Marrow

10. What is cartilage?

11. What is Cartilage? A smooth, slippery, thick layer of tissue that covers the ends of bones

12. Cartilage

13. How many bones does an adult have? 206

14. What are joints? What are ligaments? Joints: Any place where 2 or more bones come together they do not rub against each other Ligaments: a tough band of tissue that hold joints in place

16. Ligaments vs. Tendons Ligaments connect BONE to BONE Tendons connect BONE to MUSCLE

17. Now, let’s learn the important bones in the body!

18. Clavicle

19. Sternum

20. Scapula

21. Ribcage --ribs

22. Ribs

23. Spinal Cord

24. Thoracic Vertebra

25. Lumbar Vertebra

26. Pelvis

27. Coccyx (tailbone)

28. Humerus

29. Radius and Ulna

30. Radius & Ulna

31. Femur

32. Patella – knee cap

33. Tibia & Fibula

34. Phalanges in both fingers and toes

35. Metatarsals

36. Foot: Talus & Calcaneus