Understanding the Skeletal System - Part 1

1. April 22, 2013 (B Day) Agenda • Test: Cardiovascular System • Skeletal System – Part 1 (Notes) • DSR #39

2. April 23, 2013 (A Day) Agenda • Test: Cardiovascular System • Skeletal System – Part 1 (Notes) • DSR #39

3. THE SKELETAL SYSTEM – PART 1

4. Learning Objectives • Identify the functions of the skeleton. • Explain the role that joints play in the body.

5. Functions of the Skeletal System • Your skeleton has five major functions.

6. Functions of the Skeletal System • 1. • a. It provides shape and support

7. Functions of the Skeletal System • 1. • a. It provides shape and support • b. enables you to move

8. Functions of the Skeletal System • 1. • c. protects your organs

9. Functions of the Skeletal System • 1. • c. protects your organs • d. produces blood cells

10. Functions of the Skeletal System • 1. • e. stores minerals

11. Functions of the Skeletal System • Your skeleton determines the shape of your body.

12. Functions of the Skeletal System • Your skeleton determines the shape of your body. • 2. The backbone, also called the vertebral or spinal column, is the center of the skeleton.

13. Functions of the Skeletal System • 3. • The 26 small bones that make up the backbone are the vertebrae.

14. Functions of the Skeletal System • Your skeleton allows you to move. Most of the body’s bones are associated with muscles.

15. Functions of the Skeletal System • Your skeleton allows you to move. Most of the body’s bones are associated with muscles. • 4. The muscles pull on the bones to make the body move.

16. Functions of the Skeletal System • Bones also protect many of the organs in your body.

17. Functions of the Skeletal System • Bones also protect many of the organs in your body. • 5. Your skull protects your brain, your ribs form a protective cage around your heart and lungs.

18. Functions of the Skeletal System • Some of your bones produce substances that your body needs.

19. Functions of the Skeletal System • Some of your bones produce substances that your body needs. • 6. For example, the long bones of the arms and legs make certain blood cells.

20. Joints of the Skeleton • 7. A joint is a place in the body where two bones come together. Joints allow bones to move in different ways.

21. Joints of the Skeleton • 7. A joint is a place in the body where two bones come together. Joints allow bones to move in different ways. • 8. There are two kinds of joints – immovable and movable.

22. Joints of the Skeleton • Some joints in the body connect bones in a way that allows little or no movement. These joints are called immovable joints.

23. Joints of the Skeleton • Some joints in the body connect bones in a way that allows little or no movement. These joints are called immovable joints. • 9. The bones of the skull are held together by immovable joints.

24. Joints of the Skeleton • 10. These are the movable joints that we have in our bodies. Kind of Motion: Forward or backward Where in the Body: Knees and elbows

25. Joints of the Skeleton • 10. These are the movable joints that we have in our bodies. Kind of Motion: Swing freely in a circle Where in the Body: Hips and shoulders

26. Joints of the Skeleton • 10. These are the movable joints that we have in our bodies. Kind of Motion: Rotation Where in the Body: Neck

27. Joints of the Skeleton • 10. These are the movable joints that we have in our bodies. Sliding Joint Kind of Motion: One bone slides over another Where in the Body: Wrists and ankles

28. Joints of the Skeleton • 11. The bones of the in movable joints are held together by strong connective tissues called ligaments.

29. DSR #39 • Science Notebook – 16B • Prompt: What are two of the major functions of the skeleton? Why do we need joints? What does the skeleton produce that the cardiovascular system needs?