Bone Types

Question 1

Histologic features

Irregular and random arrangement of cells and collagen; lightly calcified

Answer 1

Woven bone, newly calcified

Question 2

Histologic features

Parallel bundles of collagen in thin layers (lamellae), with regularly spaced cells between; heavily calcified

Answer 2

Lamellar bone, remodeled from woven bone

Question 3

Histologic features

Parallel lamellae or densely packed osteons, with interstitial lamellae

Answer 3

Compact bone - 80% of all lamellar bone

Question 4

Histologic features

Interconnected thin spicules or trabeculae covered by endosteum

Answer 4

Cancellous bone - 20% of all lamellar bone

Question 5

Major locations

Developing and growing bones; hard calus of bone fractures

Answer 5

Woven bone, newly calcified

Question 6

Major locations

All normal regions of adult bone

Answer 6

Lamelllar bone, remodelled from woven bone

Question 7

Major locations

Inner regions of bones, adjacent to marrow cavities

Answer 7

Cancellous bone - 20% of all lamellar bone

Question 8

Major locations

Thick, outer region (beneath periosteum) of bones

Answer 8

Compact bone - 80% of all lamellar bone

Question 9

Synonyms

Immature bone; primary bone; bundle bone

Answer 9

Woven bone, newly calcified

Question 10

Synonyms

Mature bone; secondary bone

Answer 10

Lamellar bone, remodelled from woven bone

Question 11

Synonyms

Cortical bone

Answer 11

Compact bone - 80% of all lamellar bone

Question 12

Synonyms

Spongy bone; trabecular bone; medullary bone

Answer 12

Cancellous bone - 20% of all lamellar bone