Your Skeletal System - Functions, Joints, and Care

1. Chapter 16 Your Body Systems Lesson 1 Your Skeletal System Click for: >> Main Menu >> Chapter 16 Assessment Teacher’s notes are available in the notes section of this presentation. Next >>

2. A body system made up of bones, joints, and connective tissue • skeletalsystem Soft tissue in the center of some bones • marrow The point at which two bones meet • joint

3. Strong flexible, gel-like tissue that cushions your joints • cartilage Tough bands of tissue that attach your muscles to bones • tendons Cord-like tissues that connect the bones in each joint • ligaments

4. In this lesson, you will learn to • explainthe functions of the skeletal system. • identifyfour types of joints. • listsome problems of the skeletal system. • practicehealthful behaviors to keep your skeletal system healthy.

5. Analyzing a Graphic Using Figure 16.1 on page 405, find examples of each kind of joint discussed in the lesson.

6. Your Body’s Framework The skeletal system helps you stand up and works with your muscles to help you walk, run, jump, bend, lift, and carry. skeletal system A body system made up of bones, joints, and connective tissue

7. The skeletal system includes many bones that support the body and protect the organs.

8. The backbone, or spinal column, consists of 33 separate bones called vertebrae.

9. Functions of Your Skeletal System Skeletal System Functions The skeletal system provides a strong, stable framework capable of movement. The skeletal system supports and protects delicate internal organs. Bones store important minerals such as calcium and phosphorus. Bones produce the body’s blood cells.

10. Functions of Your Skeletal System Red bone marrow makes millions of blood cells each day. marrow Soft tissue in the center of some bones

11. Joints Some joints do not move. Others move only slightly, and others allow a wide range of movement. joint The point at which two bones meet

12. Joints Hinge Joints Gliding Joints Types ofMobile Joints Ball-and-SocketJoints Pivot Joints

13. Connective Tissue At joints where movement occurs, the bone surfaces are coated with smooth, slippery cartilage. cartilage A strong flexible, gel-like tissue that cushions your joints

14. Connective Tissue Tendons are another type of connective tissue. tendons Tough bands of tissue that attach your muscles to bones A large tendon that you can easily feel is your Achilles tendon.

15. Connective Tissue Ligaments help hold bones in place. ligaments Cord-like tissues that connect the bones in each joint

16. Problems of the Skeletal System

17. Caring for Your Skeletal System Good Nutrition Low-fat and fat-free dairy products contain calcium and other nutrients that are important to good health.

18. Caring for Your Skeletal System Regular Physical Exercise Regular exercise increases bone mass.

19. Caring for Your Skeletal System Posture Good posture keeps your spine healthy.

20. Caring for Your Skeletal System Protecting Yourself Use protective gear when playing sports, riding your bike, or in-line skating.

21. Lesson 1 Review What I Learned VocabularyWhat are joints? Name four types.

22. Lesson 1 Review What I Learned ListName three functions of the skeletal system.

23. Lesson 1 Review What I Learned IdentifyWhat are two problems of the skeletal system?

24. Lesson 1 Review Thinking Critically ApplyYou and another teen on the gymnastics team are practicing. You see your teammate doing an exercise that the coach said not to do. What risk is your teammate taking?

25. Lesson 1 Review Thinking Critically SynthesizeJan understands the importance of eating foods rich in calcium. She is allergic to milk, however. What suggestions can you make that might help Jan?

26. End of Chapter 16 Your Body Systems Lesson 1 Your Skeletal System Click for: >> Main Menu >> Chapter 16 Assessment