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SF1_Histology > Bone and Cartilage Images > Flashcards

Bone and Cartilage Images Flashcards

1
Q

Characteristics of cartilage:

A
  • Avascular
  • Weight-bearing
  • Basophilic staining
  • Type II collagen
  • Nourished by diffusion
  • Chondrocytes rest in lacuna
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2
Q

Cartilage is composed of:

A
  • Type II collagen
  • Avascular
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3
Q

Two ways cartilage can grow:

A
  • Appositional
  • Interstitial
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4
Q

Appositional growth:

A
  • peripheral growth
  • formation of new cartilage from existing perichondrium
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5
Q

Interstitial growth:

A
  • growth within cartilage mass
  • chondrocytes that are still capable of cell division
  • forms groups of cells (isogenous groups) called cell nest
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6
Q

Cell nest:

A
  • groups of dividing chondrocytes within cartilage all derived from a single progenitors
  • visible in interstitial growth
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7
Q

The three type of cartilage:

A
  1. hyaline
  2. elastic
  3. fibrocartilage
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8
Q

What type of cartilage is this?

A

hyaline

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9
Q

Label all:

A
  • black arrow: perichondrium
    • A = fibrogenic layer
    • B = chondrogenic layer
  • yellow arrow: cell nest
  • green arrow: mature chondrocyte in lacuna
  • red arrow = territorial matrix
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10
Q

Label all:

A
  • purple: cell nest
  • teal: territrial matrix
  • red: chondrocyte in lacuna
  • blue: chondroblast
  • green: ECM
  • black: perichondrium
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11
Q

What are the blue arrows pointing to?

A
  • hyaline cartilage at the articular surface of a synovial joint
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12
Q

What kind of cartilage is this?

A

elastic

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13
Q

Label all:

A

elastic cartilage

  • white: elastic fibers
  • black: lacuna with chondrocyte
  • red: chondrocyte
  • green: territorial matrix
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14
Q

Hyaline cartilage at the articular surface of a synovial joint only grows via:

A

interstitial growth

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15
Q

What kind of cartilage is this?

A

fibrocartilage

  • no perichondrium
  • matrix collagen 1 and 2 fibers
  • cells in lacunae lined in rows
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16
Q

Label all:

A
  • black: epiphyseal plate
  • red: fibrocartilage
    • note lacunae in lines
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17
Q

What kind of cartilage is this?

A

hyaline

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18
Q

What kind of cartilage is this?

A

hyaline at articular surface of synovial joint

19
Q

What kind of cartilage is this?

A

elastic

20
Q

What kind of cartilage is this?

A

fibrocartilage at B

21
Q

Key feature of both cartilage and bone:

A
  • presence of cells in lacunae, that is, cells trapped by their own secretions of matrix.
22
Q

Collagen make-up in bone versus cartilage:

A
  • bone: type 1
  • cartilage: type 2
    • fibrocartilage is both type 1 and 2
23
Q

Perichondrium:

A

outer and inner surface of cartilage

24
Q

Periosteum:

A

outer bone lining

25
Q

Endosteum:

A

lines all inner surfaces of bone

26
Q

What are the arrows pointing to?

A

perichondrium in cartilage

27
Q

Label all:

A

bone

28
Q

Label all:

A
29
Q

Label all:

A
30
Q

How to tell the difference between an osteoblast and an osteocyte:

A
  • osteoblast surrounded by osteoid
    • osteoid = uncalcified matrix
  • osteocyte surrounded by calcified matrix
31
Q

What is this an image of?

A

osteoblast

surrounded by osteoid

32
Q

What is this an image of?

A

osteocyte

surrounded by calcified matrix

33
Q

What is this an image of?

A

osteocyte in a lacuna in bone

34
Q

What kind of bone contains Volkmann and Haversian Canals?

A

compact bone only

35
Q

What is this an image of?

A
36
Q

Label all:

A

cancellous bone

37
Q

What are the arrowheads pointing to?

A

canaliculi

38
Q

Canaliculi:

A
  • tunnels containing cell processes of osteocytes
  • osteocytes communicate through gap junctions
39
Q

Label all:

A

intramembranous ossification

40
Q

Label all:

A

endochondral ossification

41
Q

What phase of endochondral ossification is this?

A

resting

42
Q

What phase of endochondral ossification is this?

A

proliferation

note linear columns of cells

43
Q

What phase of endochondral ossification is this?

A

hypertrophy

44
Q

What phase of endochondral ossification is this?

(black arrows)

A

calcification

(in epiphyseal growth plate)

SF1_Histology (7 decks)

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