Skeletal System Unit

Across

4. anatomical feature of the infant human skull comprising any of the soft membranous gaps (sutures) between the cranial bones
5. joint biaxial; 2 saddle-shaped articulating surfaces oriented at right angles to each other
6. thin plate-like structure very close to one another with open space between
8. discs condition in which the outer portion of the vertebral disc is torn, enabling the inner portion to herniate or extrude
9. fracture a fracture (especially of the skull) in which the fragment is depressed below the normal surface
12. curvatures curvature that develops after birth, due to holding head erect or by load bearing
15. plate the plate is found in children; in adults who have stopped growing it is replaced with a line; growth plate
16. the main or midsection of a long bone; made up of cortical bone and usually contains bone marrow and adipose tissue
17. curvatures the curvature of the spine that develops in embryo
18. fracture fracture in a young individual in which the bone is partly broken and partly bent
21. allows for movement in a single plane (pivot and hinge joints)
23. any freely movable joint, such as the shoulder and hip joints
25. form of articulation in which bones are rigidly joined by fibrous tissue
26. marrow marrow that contains the developmental stages of red blood cells, white blood cells, and megakaryocytes
27. allows for no movement in any plane (gliding joints)
28. joint, usually formed of fibrous connective tissue and cartilage
30. canal small channels in bone that transmit blood vessels from the periosteum into the bone and that lie perpendicular to the haversian canals
32. joint uniaxial; rotation around single axis; cylindrical bony process rotating within circle of bone and ligament
34. fracture break or splinter of the bone into more than two fragments
35. bone also called trabecular bone filled with embryonic connective tissue or bone marrow
37. a small channel or duct
40. joint multi axial; allows wide range of motion in all directions
44. a surgical procedure to restore a fracture or dislocation to the correct alignment
47. fiber any of the thready processes of the periosteum that penetrate the tissue of the superficial lamellae of bones
49. cartilage cartilage covering the articular surfaces of the bones forming a synovial joint
50. a dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints
51. exaggerated lumbar curvature, causes hollow back
53. the natural process of bone formation
54. fracture when the bone collapses, particularly in short bones such as the vertebrae
55. markings condyle is the round prominence at the end of a bone most often a part of an articulation

Down

1. marrow bone marrow that is fat; found at the ends of long bones in adults
2. joint uniaxial; convos cylinder in one bone applied to corresponding concavity in other
3. the skull
5. occurring around 2 axes at right angles to each other (saddle and condyloid joints)
6. fracture a bone has been twisted apart
7. a part of process of a bone separated from the main body of the bone by a layer of cartilage; ends of the long bone
8. a bone-forming cell
10. joint biaxial; modified ball socket, articular surfaces are ellipsoid instead of spherical; range of motion limited
11. a localized swelling that is filled with blood caused by a break in the wall of a blood vessel
13. bone also called cortical bone, leaves only tiny spaces (lacunae) that contain the osteocytes or bone cells
14. lateral curvature of the vertebral column
15. type of articulation between bony surfaces that permits limited motion
17. the bones in the joint become displaced from normal position
18. discs shock-absorbing structure between each vertebrae
19. a bone-breaking cell that releases calcium
20. joint non-axial; 2 flat bone surfaces w slight gliding motion, some rotation pass but limited by surrounding structures
22. skeleton the part of the skeleton that consists of the bones of the head and trunk of the vertebrae
24. the production of all types of blood cells including formation, development, and differentiation of blood cells
26. joint filled with synovial fluid and is highly movable
27. bone bones whose principal function is either extensive protection or the provision of broad surfaces for muscular attachment; skull, pelvis, sternum, and rib cage
28. canal any of the minute tubes that form a network in bone and contain blood vessels
29. bone any of the bones surrounding the mouth and nose and contributing to the eye sockets, including the upper jawbones, the zygomatic, nasal, lacrimal, etc
30. a cavity, space, or depression containing cartilage or bone cells
31. skeleton portion of the skeleton of vertebrae consisting of the bones or cartilage that support the appendages
32. remodeling bone maintains a dynamic steady state through sequential resorption and formation of a small amount of bone at the same site
33. occurring around several axes (ball and socket joints)
36. exaggerated thoracic curvature, causes humpback
37. cavity central cavity of bone shafts where red bone marrow and/or yellow bone marrow is stored
38. bone include the coccyx, sacrum, vertebrae, hyoid, etc.
39. a progressive disorder of joints caused by gradual loss of cartilage and resulting in the development of bony spurs and cysts at the margins of the joints
40. joint joints that are connected entirely by cartilage; allow more movement between bones than a fibrous joint but less than a synovial joint
41. bone bones that are as wide as they are long; primary function is to provide support and stability with little to no movement
42. joint have no joint cavity and are connective via fibrous connective tissue
43. a small fluid-filled sac that provides a cushion between bones and tendons and/or muscles around a joint
45. a bone-forming cells
46. the topmost vertebrae
48. fracture the breaking of a bone
52. bone bones that are longer than they are wide
53. the second cervical vertebrae (C2), forms the pivot upon which the atlas rotates