Chapter 19 - The Skeletal System Flashcards Preview

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Flashcards in Chapter 19 - The Skeletal System Deck (72)
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1

Axial skeleton

Central core of the body’s bony framework.

2

Skull

8 cranial bones and 14 bones of the face

3

Spinal column

26 vertebrae

4

Cervical

7 bones. 2 names. Atlas first. Axis second

5

Thoracic

12 bones

6

Lumbar

5 bones

7

Sacrum

Composed of 5 fused bones

8

Coccyx

4 to 5 fused bones.

9

Thorax

12 pairs of ribs joined by cartilage to the breast bone

10

Appendicular skeleton

Attached (appended) to the axial skeleton.

11

Acetabulum

Hip socket

12

Ossification

Formation of bones by gradual addition of calcium and phosphorus salts to cartilage.

13

Osteoblasts

Cells that produce bone

14

Osteocytes

Mature bone cells that help maintain bone tissue.

15

Osteoclasts

Involved in the breakdown of bone tissue to release needed minerals or to allow for reshaping or repair.

16

Resorption

Process of destroying bones so that it’s components can be take in in circulation.

17

Diaphysis

Long shaft of a bone composed of compact bone tissue. Also has artery and vein.

18

Medullary cavity

Cavity of a long bone containing yellow form or bone marrow.

19

Epiphysis

Irregular end of a long bone with less dense spongy bone tissue.

20

Periosteum

Thin layer of fibrous tissue that covers the bones outer surface and nourish and protects and generates new bone cells.

21

Metaphysis

Growth region. Also called epiphyseal plate. Where the bone grows until it is fully calcified

22

Suture

Immovable joint held together by fibrous connective tissue.

23

Symphysis

Movable joint connected by fibrous cartilage.

24

Synovial joint

Also called diarthrosis. Freely movable joint. Tendons attach muscles to bones to produce movement.

25

Synovial fluid

Cushions and lubricates movable joints.

26

Bursa

Small sac of synovial fluid that cushions the area around a joint.

27

Diarthrosis

Movable joint

28

Oste/o

Bone

29

Myel/o

Bone marrow, also spinal cord

30

Chondr/o

Cartilage