Bone

Question 1

Bone classification

Answer 1

compact vs cancellous (spongy)
lamellar vs woven

Question 2

Lamellar bone

Answer 2

arranged in sheets
80% within compact bone
20% within cancellous bone

Question 3

Woven bone

Answer 3

arranged randomly
growing and developing bones

Question 4

Bone components

Answer 4

Collagen type I
Cells: osteoblasts, osteocytes, osteoclasts
Endosteum/periosteum
Inner/outer circumferential lamellae
Haversian systems/canals

Question 5

Osteoblasts

Answer 5

cuboidal
eccentrically located nucleus

Question 6

Osteocytes

Answer 6

most abundant
appear flattened

Question 7

Osteoclasts

Answer 7

large, multi-nucleated cells
function in resorption of bone

Question 8

Long bones

Answer 8

diaphysis
epiphysis

Question 9

Diaphysis

Answer 9

compact bone surrounding marrow cavity

Question 10

Epiphysis

Answer 10

spongy bone within compact bone
cartilage on joint surfaces

Question 11

Epiphyseal plate

Answer 11

disc of cartilage that grows during childhood
outer fibrous layer of dense irregular CT
inner osteogenic layer (periosteum) containing primitive stem cells
compact bone
spongy bone
blood vessel
marrow
medullary cavity
articular cartilage
epiphyseal line

Question 12

Compact bone of shaft

Answer 12

circumferential lamellae
concentric lamellae
periosteal artery and vein
periosteum (outer fibrous layer and inner osteogenic layer)
interstital systems
Volkman’s canal
Haversian canal
osteon
lymphatic vessel
nerve
blood vessel
trabeculae

Question 13

Compact lamellar bone

Answer 13

Periosteum
Osteocyte
Haversian system
Outer circumferential system
Inner circumferential system
Endosteum