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Oral Histology > Bone 1 Notes > Flashcards

Bone 1 Notes Flashcards

1
Q

Maxilla,mandible are ….none

A

Flat

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2
Q

Inner layer of priosteum is also called

A

Cambium

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3
Q

Endosteum is similar to cambium but less cellular

A

F
More cellular

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4
Q

Inner layer of endosteum have …….

A

Thin fibrocellular layer

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5
Q

Basic structural unit of bone

A

Haversian system

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6
Q

Haversian canal connected to each other by ……

A

Volkmann’s canal

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7
Q

Lamellae around haversian canal

A

Concentric bone lamellae

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8
Q

Remanent of old resorbed bone

A

Interstitial lamellae

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9
Q

Origin of bone resoping cell ( osteoclast )

A

Blood

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10
Q

Osteoprogenitor inactive

A

T

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11
Q

Site of of osteoprogenitor cell

A

Inner layer of periosteum
Endosteum
Bone marrow,around B.V

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12
Q

Shape of osteoblast ,nucleus

A

Plump cuboidal ,mono nucleus

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13
Q

Secretions of osteoblast

A

Type 1, type 5 collagen
Proteoglycans ,cytokines ,growth factors
Alkaline phosphatase enzyme

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14
Q

Type of attachment between osteocytes,osteoblast ,preosteoblast

A

Gap junction

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15
Q

When osteoblast become inactive in the surface it called

A

Lining cell

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16
Q

Degeneration and death of osteoblast release substance that differentiate osteoclast! His callef

A

Osteocytic osteolysis

17
Q

Osteoclasts nucleus ( multinucleated)

A

10- 20 nuclei

18
Q

Osteoclast have large number of Golgi but small RER

A

T

19
Q

Enzyme of osteoclast

A

Acid phosphatase

20
Q

Cytoplasm of osteoblast is basophillic,but osteoclast acidophilic

A
21
Q

Life span of osteoclast

A

10 -14 day
Apoptosis

22
Q

……activate differentiation of osteoclast

A

M-CSF

23
Q

Activation of osteoclast by …….

A

RANKlE

24
Q

Inhibit osteoclast

A

OPG

25
Q

Site of nuclei in osteoclast

A

Basal

26
Q

Main treatment of osteoclast

A

Bisphosphonate

27
Q

Surface resorped by osteoclast in compact bone

A

Leading edge, cutting cone ,How Shape lacunae

28
Q

Surface resorped by cancellous bone

A

Half moon

29
Q

Filling cone is made by …..

A

Osteoblast

30
Q

Osteoclast can resorb only minerilized surface

A

T

31
Q

Cancellous bone Have turn over

A

True

Oral Histology (16 decks)

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