2. THE SKELETAL SYSTEM Chapter 14 Lesson 1 part 2

3. joint a connection between two or more bones or between cartilage and bone Joints provide flexibility and enable the skeleton to move.

4. Joints are designed for specific functions and are classified into two groups: Movable Joints Immovable Joints

5. Movable Joints ball and socket hinge pivot gliding (condyloid)

6. Ball and socket joint

7. Hinge joint

8. Pivot joint

9. Gliding ( condyloid) joint

10. Immovable Joints sutures - the interlocking margins of skull bones

11. Anatomy of a joint Tendon Bursa Patella Femur Tibia Ligament Synovial Cavity

12. synovial membrane lines the inner surface of the joint cavity fluid, which acts as a shock absorber between the bones secretes a lubricating fluid called synovial

14. ligaments connect the bones of a joint

15. ligaments

16. tendons connects muscle to bone; often extend across the joint and strengthens it

18. bursas Bursa a fluid-filled sac; lined with synovial membrane

19. bursas located between tendons, ligaments, & bones

20. bursas Bursa serve as cushions and reduce friction

21. Arthritis Rheumatism Sprain Double-jointed Osteoporosis Bone & Joint Diseases and Disorders

22. a disease in which joints become irritated or inflamed, such as when cartilage in joints is damaged or wears away; usually accompanied by pain. Arthritis frequently results in changes in the joint structure, greatly hampering movement. Arthritis

23. a general term for various conditions that are characterized by soreness and stiffness of muscles and joints Rheumatism

24. A stretch injury to the ligaments of a joint. In severe sprains, the ligaments may be torn. Sprain

25. results from abnormally long ligaments, which allow a joint to be easily dislocated Double-jointed

26. Osteoporosis is a common bone disease which causes bones to weaken and become brittle.Osteoporosis

27. One of the best ways to keep bones healthy is to exercise. Without exercise, bones weaken and lose mass. Bones need a balanced diet that includes calcium and Vitamin D. Healthy Bones

28. Because bones supply calcium to your nerves, muscles, and heart, a healthy skeletal system is important in maintaining your body’s homeostasis. Working together with muscles, bones enable you to move away from unpleasant stimuli or danger. The Skeletal System and Homeostasis