1. Test Review

3. ball-and-socket joint knee joint that allows bones to “glide” over each other elbow

4. Blood Vessel Compact Bone Marrow Spongy bone

5. fills the center and spaces at the ends of bones and produces blood cells

6. marrow

7.  backbone  rib cage  arms and legs  skull

8.  blood vessels  nutrients  nerves  muscle fibers

9. Compact bone contains tightly packed

10. osteocytes

11.  calcium  regular exercise  a balanced diet  avoiding UV radiation

12. The point where two or more bones meet is called a

13. joint

14. Smooth muscles can be found

15. in internal organs

16. Muscle cells get the energy needed to contract from

17. ATP

18. What is the difference between cartilage and bone?

19. Bone contains significant mineral deposits between its cells, while cartilage does not.

20.  can change the diameter of blood vessels.  moves food through the digestive tract.  is not under conscious control.

21. The total amount of force that a muscle exerts

22. depends on the total number of individual muscle fibers that have been stimulated

23. Ligaments attach

24. bone to bone

25. It has been known for a long time that muscle contraction requires ATP. Scientists have discovered that ATP is required to release the attachments between actin and myosin in the many cycles of attachment, release, and reattachment that result in sliding of these filaments past each other. Which of the following phenomena can be explained by this specific role of ATP?

26. muscle fatigue

27. Tendons are bands of tissue that connect

28. muscles to bones

29. Flexors and extensors are examples of

30. voluntary muscles

31. The loss of bone density that may occur in the later years of life is called

32. osteoporosis

33. In an embryo, the skeleton is originally made of

34. cartilage

35. Yellow marrow is a soft tissue within bones that

36. consists mainly of fat and stores energy

37. A person with a broken pelvic bone would probably be unable to

38. walk or run

39. The heart and lungs are protected by the

40. rib cage

49. An embryo’s skeleton is made of?

51. Helps prevent bone loss?

52. Calcium regular exercise balanced diet limited UV radiation