Bone pt 2

Question 1

Primary bone

Answer 1

aka immature bone (woven)
found in fetal development and bone repair.
many osteocytes and low minerals.
random collagen I

Question 2

Secondary bone

Answer 2

aka mature bone (lamellar)
more mineral so stronger.
organized collagen I

Question 3

Parts of compact bone

Answer 3

Outer circumferential lamellae, inner circumferential lamellae, haversian systems, interstitial lamellae

Question 4

Outer circumferential lamellae

Answer 4

aka periosteal lamellae
newer bone under periosteum.
Many Sharpey’s fibers

Question 5

inner circumferential lamellae

Answer 5

aka endosteal lamellae

newer bone next to cancellous bone and/or marrow cavity

Question 6

haversian systems

Answer 6

aka osteons

Question 7

osteocytes in

Answer 7

lacunae

Question 8

lamellae

Answer 8

rings of bony matrix

Question 9

canaliculi

Answer 9

small channels containing osteocyte process

Question 10

central (haversian) canal

Answer 10

contains bvs, sympathetic nerves, lympatics, endosteum, and loose areolar ct

Question 11

Volkmann’s canals

Answer 11

connect adjacent osteons; vascular channel

Question 12

interstitial lamellae

Answer 12

irregular arcs of bone in between complete osteons

Question 13

Cancellous bone

Answer 13

aka trabecular bone or spongy

Question 14

trabeculae in Cancellous bone

Answer 14

align with stress.
not random.
surrounded by irregular ct filled spaces

Question 15

osteon structure in Cancellous bone

Answer 15

usually none

Question 16

Cell in Cancellous bone

Answer 16

from the very vascular ct in the vascular channels

Question 17

Two parts of the periosteum

Answer 17

fibrous and osteogenic

Question 18

Structure of fibrous periosteum

Answer 18

much collagen I.
**many sharpey’s fibers.
many fibroblasts.
blood vessels and sympathetic/ sensory nerves

Question 19

functions of fibrous periosteum

Answer 19

distribute bvs and nerves.

provide transition between bone and tendons and ligs

Question 20

structure of osteogenic periosteum

Answer 20

a single layer of cells.

possible cell types: osteoprogenitors, osteoblasts, osteoclasts

Question 21

function of osteogenic periosteum

Answer 21

***healing, growth, remodeling

Question 22

endosteum

Answer 22

single layer of cells that line internal bone surfaces

Question 23

components of endosteum

Answer 23

osteoprogenitors, osteoblasts, osteoclasts, and bone-lining cells

Question 24

locations of endosteum

Answer 24

vascular channels, next to endosteal lamellae and lining central canals and Volkmann’s canals

Question 25

endosteum is NOT lining

Answer 25

lacunae, canaliculi