Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Histopathology > Exam III practice questions > Flashcards

Exam III practice questions Flashcards

1
Q

Name a non-collagenous protein associated with bone:

A

osteonectin, osteopontin, osteocalcin, sialoprotein, phosphoprotein, glycoprotein, bone specific protein, bone morphogenetic protein, carboxyglutamic acid containing protein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

According to your text, which bone morphogenic proteins promote bone formation?

A

BMP 2, 4, 6 and 7

(if only one BMP can be chosen pick BMP2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What compounds are found in bone matrix vesicles?

A

alkaline phosphatase, pyrophosphatase, glycoprotein, phosphoproteins, and phospholipids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

A ____ is defined as a denuded area of bone that extends through the marginal bone creating a “cleft-like” defect

A

dehiscence

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Multiple myeloma accounts for nearly ____ % of all malignancies involving bone

A

50%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

According to your text, the intrinsic fibers of alveolar bone are oriented ____ to the bone surface; the extrinsic fibers of the PDL are oriented ____ to the bone surface

A

intrinsic= parallel

extrinsic = perpindicular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Normally, at 4-5 years of age, the jaws will accomodate a total of ___ erupted and unerupted teethteeth

A

20 erupted + 28 developing (unerupted) teeth= 48 teeth total

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the rate of eruption of teeth:

A

3mm every 3 months but this is NOT a constant rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The deciduous dentition has generally completed eruption by age:

A

3 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Melanocytes are derived from cells of what embryonic structure:

A

neural crest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

After root formation is complete, the reduced enamel epithelium forms the ____ after eruption

A

junctional epithelium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the most common neoplastic (cancerous) lesion arising from odontogenic epithelium?

A

ameloblastoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Oral cancer accounts for approximately ___ % of all cancers

A

3 %

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The highest incidence of squamous cell carcinoma is found in what population?

A

Middle-Aged African-American

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

According to your text, where are oxytalan fibers found?

A

Periodontal ligament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Oral cancer accounts for approximately ___% of all cancers

A

3%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Short columnar/tall cuboidal epithelial cells are are found in which ducts?

A

striated ducts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the classification of the submandibular gland?

A

Mixed seromucous gland (predominately serous with mucous contributions)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the terminal exretory duct of the submandibular gland?

A

Wharton’s duct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Pleomorphic adenoma is a benign tumor that accounts for ___% of parotid salivary gland tumors

A

53-77%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

According to your text, on the posterior slope of the TMJ articular eminence, the inner perpendicular collagen fibers are responsible for ____.

A

resting compression of mandibular condyle against the articular surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

In the intimal layer of the TMJ, the macrophage-like cells are the:

A

Type A cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

The type B synovial cells of the synovial membrane secrete:

A

hyaluronate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Which receptors are found in the TMJ area?

A

A: Ruffini Corpuscles- proprioception
B: Pacinian Corpuscles- dynamic mechanoreception
C: Golgi Tendon Organs- static mechanoreception
D: Free Nerve Endings- pain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

2- What is the fibrillar component of the mature dentin matrix?

A

Type 1 collagen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

2- Histologically, the presence of ____ is used to distinguish between the root dentin from the crown dentin

A

Tome’s Granular layer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

2- According to your text, when compared to intertubular dentin, how is peritubular dentin characterized?

A

It has a greater content of inorganic salts, more mineralized because exposed to more granular stuff

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

2- During the transition from undifferentiated cell to mature odontoblast, what is the function of fibronectin?

A

Help align themselves along the basal lamina, assume polarity and differentiate into secretory cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

2- What is contained in the odontoblastic matrix vesicle?

A

Alkaline phosphatase, phospholipids, phosphoproteins, pyrophosphatase, Ca2+, PO4-, annexin, and calcium hydroxyapatite crystallites

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

2- What growth factors are secreted by IEE during initiation of odontoblastic differentiation?

A
  1. transforming growth factor (TGF)
  2. Fibroblast growth factor (FGF)
  3. Insulin-like growth factor (IGF)
  4. Bone morphogenetic protein (BMP)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

2- What is the function of Annexin V in odontoblastic matrix vesicles?

A

Mediates flow of calcium into the matrix vesicle; also serves as a collagen receptors that binds matrix vesicles to collagen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

2- The theory most commonly accepted to explain why pain is elicited when dentin is mechanically stimulated is the ____ theory

A

Brannstrom’s Hydrodynamic Theory

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

2- In the dental pulp, macrophages and dendritic cells constitute ____% of the total cell population

A

8%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

2- The cells responsible for physiologic matrix of the cementum surface and alveolar bone proper are derived from undifferentiated cells located in the:

A

interstitial spaces of the PDL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

2- Where is Tome’s granular layer found?

A

Dentin of the root adjacent to the cementum

36
Q

2- A gap between the enamel and cementum at the CEJ has an incidence of occurence of approximately ____%.

A

10%

37
Q

2- Cementicles are thought to be formed in response to what stimuli?

A

Response to local trauma or hyperactive occlusion and appear in increasing numbers with increasing age

38
Q

2- What do teeth look like that exhibit dental erosion?

A

A- Teeth have broad concavities, with cupping of occlusal surfaces and dentin exposure
B- Incisal translucency as well as wear on non-occluding surfaces
C- Amalgam restorations appear “raised” and have a non-tarnished appearance

39
Q

2- A patient with GERD will likely have tooth erosion caused by:

A

Stomach acid

40
Q

2- The thickness of cementum at the CEJ is approximately ___ micrometers

A

30-50 micrometers (thinnest here)

41
Q

2- What is the primary function of cementum?

A

Provides attachment for the PDL

42
Q

2- It is thought that nonmyelinated nerve C fibers of the dental pulp are associated with this type of pain:

A

Dull, diffuse

43
Q

2- Most myelinated nerve fibers in the dental pulp are designated as ____ fibers

A

A-delta

44
Q

2- It is estimated that each nerve fiber contributes ____ branches to Raschkow’s Plexus

A

8

45
Q

2- Where do epithelial rests of Malassez originate from?

A

Remains of Hertwigs Root Sheath

46
Q

2- An acute pulpal abcess is characterized by dense aggregations of what cell?

A

neutrophils and macrophages and other inflammatory cells

47
Q

2- When a developing carious lesion reaches the DEJ, this will often initiate the formation of what at the pulp interface of the dentin:

A

reparative dentin (tertiary dentin)

48
Q

2- The principal fiber group in the PDL that constitutes the main support of the tooth against masticatory forces is theL

A

oblique

49
Q

2- Which PDL fiber group does not exhibit a bony insertion?

A

Transseptal

50
Q

2-The “biologic width” is comprised of 1 mm of ___ epithelium and 1 mm of ____.

A

junction epithelium & gingival fiber ligament (GFL)

51
Q

2-An aggressive benign tumor derived from odontogenic epithelium that exhibits a radiolucent, multilocular radiographic appearance could be:

A

ameloblastoma

52
Q

2- The lateral periodontal cyst is thought to have its origins in the:

A

Epithelial rest of Malassez in the PDL

53
Q

Leukotrienes, Thromboxanes, and prostaglandins all activate type A cells in the arachadonic acid pathway. Phospholipids are associated with edema, vasodilation and pain in areas of inflammation

A

Both statements are true

54
Q

The initial layer of the TMJ has two types of cells and the type B cells secrete hyaluronate

A

true

55
Q

The left image is a young persons condylar head

A

True

56
Q

The superior lateral pterygoid attaches to the joint capsule the articular disc. The inferior lateral pterygoid attaches to the neck of the condyle

A

Both statements are true

57
Q

This image is of a ____. A characteristic of this is _____.

A

mucocele; salivary gland duct is damaged

58
Q

Giant cell tumors cause a painless expansion of bone. Radiographically can be confused with amelobastoma or a periapical cyst.

A

Both statements are true

59
Q

The image below shows _____. This can be caused by:

A

Dehiscience;
a- facial-lingual alignment of teeth
b- mesial-distal contour of CEJ
c- facial-lingual width of teeth
d- presence of enamel pearls or cervical enamel projections

60
Q

This image shows :

A

gingival parakeratosis

61
Q

This image shows ____. A characteristic of this is:

A

geographical tongue; filiform with food bolus

62
Q

Pre-eruptive growth includes:

A

a- length of jaw
b- width of jaw
c- alveolar ridge height
d- buccal-lingual width of alveolus

63
Q

This image shows

A

lichen planus

64
Q

Hairy tongue is caused by filiform papillae growth and delayed shedding:

A

true

65
Q

These images show

A

benign mucous membrane pemphigoid

66
Q

This image shows:

A

complex odontoma

67
Q

Complex odontoma defect originates in the initiation stage:

A

true

68
Q

Bone lining cells =

A

inactive osteoblasts that are thought to protect bone from osteoclasts

69
Q

Dilaceration is caused by a defect in:

A

Hertwig’s root sheath

70
Q

Root is NOT needed for eruption:

A

true

71
Q

Identify the medial nasal prominance:

A

in yellow

72
Q

Taste innervation to the anterior 2/3 of the tongue:

A

CN7- facial nerve

73
Q

Cleft lip results when there is a lack of fusion between:

A

medial nasal and maxillary processes

74
Q

Mixed gland involved in salivation upon food:

A

submandibular gland

75
Q

Stratum intermedium has cells that release alkaline phosphatase. Eventually it is included in the reduced epithelium that forms the junctional epithelium after eruption.

A

both statements are true

76
Q

Metaplasia is a reversible change in which one cell type is replaced by another

A

true

77
Q

Myoepithelial cells associated with acini and secreting stuff from salivary glands

A

true

78
Q

Teeth follow the gubernacular canal during eruption. Gubernacular canal contains remnants from dental laminal epithelium.

A

both statements true

79
Q

When mandible moves, the disc also moves so all articulation is on the fibrous portion of the disc

A

true

80
Q

Characteristic of woven bone:

A

collagen randomly oriented

81
Q

Osteoclast making the environment very acidic to break down hydroxyapatite and then proteins breaking down organic materials

A

both statements true

82
Q

Von Ebners glands are associated with:

A

serous only and circumvallate papillae

83
Q

Choose the false statement regarding the dislocation of the TMJ

A

Disc is capable of healing itself quickly

84
Q

Are deciduous teeth replaced from the buccal or lingual?

A

lingual

85
Q

Vermillion border characteristic:

A

blood vessels close to the surface

86
Q

Tertiary dentin is released immediately in response to outside forces. It is laid down in a clean fashion.

A

First statement true; second statement false

Histopathology (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions