skeletal 2

Question 1

Compact bone

Answer 1

dense smooth, outer layer bone

Question 2

Osteon

Answer 2

unit of compact bone

Blood & nerve supply

Question 3

Central (= Haversian) canal

Answer 3

@ center of osteon

Question 4

Volkmann’s (perforating) canals

Answer 4

perpendicular to central canal

Connect central canals to surface

Question 5

Lacunae w/ osteocytes

Answer 5

in layered rings

Question 6

Canaliculi

Answer 6

contain osteocyte processes in their radiating boney channels – interconnecting cells

Question 7

Lamellae

Answer 7

layered rings of osteocytes in lacunae)
Osteonic lamellae (concentric rings around central canal)
Alternating canaliculi directions are strong
Interstitial lamellae (between osteons)
Circumferential lamellae
External – external to all compact bone
Internal – internal to compact bone

Question 8

CT Membranes of Osseous Tissue

Answer 8

Endosteum –

Periosteum

Question 9

Endosteum

Answer 9

internal to spongy bone, outlines medullary cavity

Question 10

Periosteum

Answer 10

around compact bone
Outer layer is fibrous & acts as attachment site for muscles, tendons, & ligaments.
Inner layer is osteogenic w/ Sharpey’s fibers attaching to compact layer.
Nutrient foramina pierce both.

Question 11

Chemical Composition of Bone

Answer 11

Bone is a CT = cells + calcified matrix

Cells – CT so these are from mesenchyme

Question 12

Osteoprogenitor

Answer 12

(“like osteogenic”) – stem cell for other types

Question 13

Osteoblast – BLAST

Answer 13

immature cell, secretes matrix

Question 14

Osteocyte – CYTE

Answer 14

mature cell, maintains matrix

Question 15

Osteoclast – CLAST

Answer 15

destroying cell, “eats” matrix

Question 16

Compact bone

Answer 16

dense smooth, outer layer bone

Question 17

Osteon

Answer 17

unit of compact bone

Blood & nerve supply

Question 18

Central (= Haversian) canal

Answer 18

@ center of osteon

Question 19

Volkmann’s (perforating) canals

Answer 19

perpendicular to central canal

Connect central canals to surface

Question 20

Lacunae w/ osteocytes

Answer 20

in layered rings

Question 21

Canaliculi

Answer 21

contain osteocyte processes in their radiating boney channels – interconnecting cells

Question 22

Lamellae

Answer 22

layered rings of osteocytes in lacunae)
Osteonic lamellae (concentric rings around central canal)
Alternating canaliculi directions are strong
Interstitial lamellae (between osteons)
Circumferential lamellae
External – external to all compact bone
Internal – internal to compact bone

Question 23

CT Membranes of Osseous Tissue

Answer 23

Endosteum –

Periosteum

Question 24

Endosteum

Answer 24

internal to spongy bone, outlines medullary cavity

Question 25

Periosteum

Answer 25

around compact bone
Outer layer is fibrous & acts as attachment site for muscles, tendons, & ligaments.
Inner layer is osteogenic w/ Sharpey’s fibers attaching to compact layer.
Nutrient foramina pierce both.

Question 26

Chemical Composition of Bone

Answer 26

Bone is a CT = cells + calcified matrix

Cells – CT so these are from mesenchyme

Question 27

Osteoprogenitor

Answer 27

(“like osteogenic”) – stem cell for other types

Question 28

Osteoblast – BLAST

Answer 28

immature cell, secretes matrix

Question 29

Osteocyte – CYTE

Answer 29

mature cell, maintains matrix

Question 30

Osteoclast – CLAST

Answer 30

destroying cell, “eats” matrix