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Question
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Number
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1
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At the beginning of 2nd month
of fetal life skull is made up of all |
Chondrocranium; Desmocranium;
Visceral part of skull |
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2
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Desmocranium is
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Memebranous. The cartilaginous
parts are the chondrocranium and the visceral parts of skull. |
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3
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Desmocranium includes
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Wall and roof of brain case
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4
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All the bones of upper face
develop by |
Intramembranous ossification.
The bones of base of skull develop by endochondral ossification and cranial vault by sutural apposition. |
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5
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The mandible develops by
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Intramembranous ossification
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6
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The cartilage of the first arch
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Meckel’s cartilage
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7
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The highest remodeling rate in
jaw bone is seen with |
Alveolar bone. As this bone is
attached to the constantly remodeling periodontal ligament fibers, they under go constant remodeling to accommodate. |
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8
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The proximal part of Meckel’s
cartilage is the primodium for the |
Incus & Malleus. Larynx
develops from 3rd and 4th pharyngeal arch. Stapes develops from the 3rd arch. |
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9
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Bones of the base of the skull
develops by |
endochondral ossification
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10
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Bones of the upper face
develops by intramembraneous ossification close to the |
Meckel’s cartilage
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11
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The mandible makes its
appearance as a bilateral structure in which week of fetal life |
6th week
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12
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Throughout fetal life the
mandible is a/an |
Paired bone
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13
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The 2 halves of the mandible
unite by ossification of the symphyseal fibrocartilage at |
1st year
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14
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The symphysial cartilage is
derived from |
Connective tissue of midline
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15
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Mental ossicles are bone
found |
In the symphysial cartilage
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16
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The development of the alveolar
process begins at |
2nd month of fetal life
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17
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The bone at the alveolar crest
that has characteristics of cartilage and bone is referred as |
Chondroid bone
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18
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Alveolar bone proper is
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The thin lamellae of bone that
surrounds the root of the tooth & give attachment to the periodontal ligament fibers. |
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19
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The supporting alveolar bone is
inclusive of |
Cortical plates; Compact bone;
Spongy bone. Does not include Bundle bone |
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20
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The cortical plate is thickest
in the |
Buccal side of the posterior
mandible |
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21
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Spongy bone is not found in
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In the region of the anterior
teeth of both jaws |
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22
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The spongiosa of the alveolar
process with a ladder like configuration is present in |
Mandible
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23
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The spongiosa of the alveolar
process is irregularly arranged is in |
Maxilla
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24
|
The inderdental and
interradicular septa contains the nutrient canals called as |
Zuckerkandl and Hirschfeld
canal |
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25
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In mandible the hematopoietic
marrow is not found in |
Coronoid process
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26
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The alveolar bone proper is
perforated by branches of intralveolar nerves and blood vessels and hence is also called the |
Cribriform plate
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27
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The periodontal ligaments are
anchored to the |
Bundle bone
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28
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The type of bone that contains
more calcium salts per unit area is |
Bundle bone
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29
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Inorganic content of bone is approximately
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65%
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30
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In bone the type of collagen is
primarily |
Type I
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31
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Howship’s lacunae are bay like
depressions in the bone that contain |
Osteoclast
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32
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The first formed alveolar bone
lies near to the |
Crypt wall
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33
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The bundle bone is named so because
it |
It provides attachment to
bundles of fibers of periodontal ligament |
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34
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Lamina dura has
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Increased radiopacity
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35
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The increased radiopacity of
lamina dura is due to the fact |
Absence of trabeculation. It is
a very thin plate of thick bone with absence of trabeculation. |
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36
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The Sharpey’s fiber that is
located within old bone and terminates with reversal line is |
Severed fibers
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37
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The Sharpey’s fiber that is
located within the new bone and terminating at reversal line is the |
Adhesive fibers
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38
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The Sharpey’s fibers that are
entirely in the new bone is the |
Arborized fibers
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39
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The non-striated Sharpey’s
fibers cross the reversal line is |
Continuous fibers. Continuous
fibrils connect the old and new fibrils and to accomplish this they cross the reversal lines. |
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40
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Osteon is
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A cylinder of bone that forms
the functional unit of bone |
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41
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In the centre of each osteon is
the |
Haversian canal
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42
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Two adjacent Haversian canals
are interconnected by |
Volkmann canal
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43
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In addition to collagen of type
I, osteoblasts also secrete collagen of |
Type V
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44
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The bone that has more
osteocytes is the |
Woven bone. It is reported that
the woven bone and repairing bone have large number of osteocytes as compared to others. |
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45
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Osteoblasts produce their
hydrolytic enzymes under the influence of |
Interleukin 6
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46
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Chondroblasts on reaching
maximum size elaborates |
Type X collagen
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47
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Alveolar process attains its
maximum size with |
On one half root formation. The
tooth starts to erupt once it is half formed and with the teeth reaching its functional position, the alveolar process attains its maximum size. |
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48
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The part of the jaw that forms
and supports the sockets of the teeth is the |
Alveolar process
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49
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The bone that surrounds
alveolar bone proper and gives support to the socket is the |
Supporting alveolar bone
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50
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The outer and inner plates of
alveolar process are formed by the |
Alveolar bone proper
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51
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The area between the cortical
plates and alveolar bone proper is filled by the |
Spongy bone
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52
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In alveolus, defects of the
outer alveolar walls are common in |
Posterior maxilla
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53
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Usually the marrow space in the
alveolar process contains |
Fatty marrow
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54
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In adulthood the bone turnover
rate of cortical bone is |
5% per year. 15% per year bone
turnover rate is observed with trabeculae. |
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55
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The fibrous attachment between
tooth and bone is called as |
Gomphosis
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56
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The matrix of the bone that is
devoid of minerals is referred as |
Osteoid tissue
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57
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The pink layer of tissue in
hematoxylin and eosin section surrounding the normal basophilic bone is the |
Osteoid tissue
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58
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The scalloped outline near
Howship lacunae that turn their convexity towards the old bone is |
Reversal line. Resting lines
are often linear and not scalloped. |
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59
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After removal or loss of tooth,
the alveolar bone |
Undergoes atrophy
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60
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The embryonic bone that is
formed during healing in extraction socket is the |
Immature bone
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61
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The spongy bone in association
with a function less teeth show radiographically |
Pronounced rarefaction of
trabeculae. They contain less bone trabeculae and are thin. |
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62
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Alveolar bone proper in
association with functionless teeth is |
Remain normal. They maintain
their thickness as they continue to receive some or other stimuli from the tension in periodontal ligament fibers. |
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63
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Bulk of the compact bone is
made up of |
Concentric lamellae.
Circumferential lamellae enclose or line the outer surface of adult bone while interstitial lamella is seen between the circumferential and concentric lamellae. |
Prof. Rooban Thavarajah
Oral and Maxillofacial Pathologist
List