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Undeleted > Bone > Flashcards

Bone Flashcards

1
Q

Identify 1-3.

A
  1. compact bone
  2. periosteum
  3. spongy bone (diploe)
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1
Q

large multinucleated motile cells, remove/resorb bone, forms from fusion of many monocytes, secrete enzymes that degrade bone, have ruffled border

A

osteoclast

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2
Q

Identify 1-3.

A
  1. epiphysis
  2. metaphysis
  3. diaphysis
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2
Q

these cells are responsible for secretion of organic component of bone, important for signaling for calcification of bone, found on surface of bone matrix, lots of RER

A

osteoblasts

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2
Q

part of osteon that contains vasculature

A

central canal aka Havershon’s canal

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2
Q

Identify.

A

cement line

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3
Q

fills in spaces between osteons, made of remnants of old osteons

A

interstitial lamellae

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3
Q

Identify what is marked with *

A

inner circumferential lamellae

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3
Q

This type of bone does not contain osteons.

A

spongy/trabecular bone

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4
Q

Identify.

A

osteons

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5
Q

where is spongy bone laid down?

A

along stress lines, found more internally in a bone

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6
Q

osteoblasts produce ___, the organic portion of ECM made up of type 1 collagen

A

osteoid

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6
Q

type of collagen present in lamellae of osteon?

how is it arranged?

A

type 1

run parallel to each other, at angle (next lamellae fibers run at 90 degree angle to previous lamellae fibers)

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6
Q

Identify 1-5.

A
  1. adipocytes
  2. osteocyte
  3. endosteum
  4. periosteum
  5. muscle
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7
Q

covers the outer surface of the bone, is vascularized, contains osteoprogenitor cells.

A

periosteum

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9
Q

long axis of bone- contains medullary cavity in center, has compact bone on outside

A

diaphysis (aka shaft)

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10
Q

___ lay down bone ____ break down bone

A

osteoblasts osteoclasts

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12
Q

main difference between woven & lamellar bone?

A

woven bone has collagen fibers in random directions, lower mineral content, more osteocytes

lamellar bone is collagen fibers parallel in rings, is well-organized, fewer osteocytes

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12
Q

Type of bone?

A
  1. woven bone
  2. lamellar bone
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12
Q

outer limit of each osteon, where it is very collagen rich

A

cement line

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13
Q

these cells are mesenchymal stem cells that can differentiate into osteoblasts, found in periosteum & endosteum

A

osteogenic cell

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14
Q

consists of cells that belong to stroma of marrow, main source of lining cells of haversian canals

A

endosteum

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15
Q

these sit in lacuna between lamellae of osteon

A

osteocytes

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16
Q

bone spicules present in spongy bone

A

trabeculae

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18
Q

cortical bone = ____ trabecular bone = ____

A

compact bone spongy bone

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19
Q

Identify 1-3.

A
  1. Haversian canal (central canal)
  2. Volkmann’s canal
  3. Sharpey’s fibers
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20
Q

Type of bone?

A

woven

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21
Q

this area of osteoclast helps prevent H ions from ruffle border from leaking out

A

sealing zone

22
Q

where do osteoblasts sit in trabeculae?

A

along outside

24
Q

these perforate the periosteum to supply the compact bone of a long bone

A

Sharpey’s fibers

26
Q

type of cartilage found on ends of long bone

A

hyaline

26
Q

Type of bone?

A

lamellar bone

27
Q

Identify 1-2.

A
  1. cannaliculi
  2. osteocytes (in lacunae)
28
Q

connect central canal of osteon to endosteum and periosteum

A

Volkmann’s canals

29
Q

this area of long bone lengthens as you grow (separates the metaphysis & epiphysis)

A

epiphyseal plate

29
Q

this lines the trabecullae of inner bone

A

endosteum

30
Q

Type of bone?

A

woven/immature

32
Q

functions of bone?

A

protection support mechanical basis for movement storage blood cell formation

33
Q

end part of long bone

A

epiphysis

33
Q

fibrous outer layer of periosteum is where ___ attachment occurs

A

muscle

34
Q

flared out portion between diaphysis & epiphysis

A

metaphysis

35
Q

direction of movement of nutrients in a trabeculae?

A

from outside to inside

36
Q

these cells are totally surrounded by ECM, stuck in lacuna, cytoplastmic extensions for communication and nutrient passage, maintains the bone tissue that is present

A

osteocyte

37
Q

Identify.

A

epiphyseal line

40
Q

primary bone tissue is ____

secondary bone tissue is ____

A

woven bone (immature bone)

lamellar bone (mature bone)

41
Q

Type of bone in 1-2?

A
  1. Compact bone (cortical bone)
  2. Spongy bone (cancellous bone)
43
Q

Type of bone?

A

lamellar

45
Q

shapes of bone?

A

long (shaft w/ 2 ends) short (cubed bones- ie tarsal, carpal bones) flat (ie skull, scapula) irregular (ie vertebrae) sesamoid (found in tendons ie patella)

46
Q

Identify 1-3.

A
  1. Havershon’s canal (central canal)
  2. Lamellae
  3. Interstitial lamellae
48
Q

Identify 1-2.

A
  1. osteoblast
  2. osteocyte
49
Q

Indentify what is marked with *

What is arrow pointing to?

A

Outer circumferential lamellae

Periosteum

50
Q

these cells can give rise to both osteoblasts & osteoclasts

A

osteogenic cells

51
Q

part of osteon that surrounds central canal- concentric rings of bone matrix

A

lamellae

52
Q

Spongy bone is a type of ___ bone

A

lamellar (secondary)

53
Q

structural unit of compact bone

A

osteon

54
Q

Identify cell type.

A

osteoclast

55
Q

Identify 1-3.

A
  1. Osteoblasts
  2. Osteons
  3. Havershon’s Canal (central canal)
56
Q

extensions of osteocytes used for nutrient transfer are called…

A

cannaliculi

57
Q

the inorganic portion of ECM that gives the bone its hardness is ____

A

hydroxyapetite crystals

59
Q

toward end of puberty, hyaline cartilage disappears and is replaced with bone, so you are left with remnant called…

A

epiphyseal line

60
Q

these connect 1 cannaliculi to the next to pass nutrients

A

gap junctions

61
Q

2 main components of hydroxyapetite crystals

A

Ca & P

62
Q

Identify cell type.

A

osteoclast

63
Q

boundary between __ &___ is where marrow cavity begins in a long bone

A

metaphysis & diaphysis

64
Q

Identify 1-2.

A
  1. osteoblast
  2. osteoclast
66
Q

Identify 1-2.

A
  1. Osteoblast (lots of RER)
  2. osteoid
67
Q

Identify 1-5.

A
  1. interstitial lamellae
  2. outer circumferential lamellae
  3. Volkmann’s canal
  4. osteon
  5. central canal/ Havershon’s canal
68
Q

these lamellae go around the whole outside surface

A

outer circumferential lamellae

Undeleted (13 decks)

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