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Oral Histology > Oral Mucous Membrane > Flashcards

Oral Mucous Membrane Flashcards

1
Q

Which of the following is correct_______________?
A. Non-keratinized epithelium is characterized by absence of stratum granulosum and stratum corneum, The surface cells are nucleated
B. Parakeratinished epithelium is characterized by superficial cells with pyknotic nuclei and absence of stratum granulosum
C. In ortho keratinisation the superficial cells lose their nuclei, but stratum granulosum is present
D. All of the above

A

D. All of the above

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2
Q

All of the following is lined by stratified squamous epithelium, except?
A. Lips
B. Tongue
C. Roof of the soft palate
D. Oropharynx

A

C. Roof of the soft palate

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3
Q

Membrane coating granules may_____________?
A. Appear as circular with an amorphous core in keratinized epithelium
B. Originate from golgi system
C. Packed with tonofilaments
D. Helps in adhesion of fully keratinized epithelial cells

A

B. Originate from golgi system

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4
Q

Basement membrane________________?
A. Contains lamina lucida & Lamina dura
B. Consists luratihyaline granules
C. Consists of lamina densa and lamina lucida
D. consists of desmosomes and hemi desmosomes

A

C. Consists of lamina densa and lamina lucida

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5
Q

The high level clear cell present in the oral epithelium is_____________?
A. Melanocyte
B. Lymphocyte
C. Merkel cell
D. Langerhans cell

A

D. Langerhans cell

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6
Q

Vonebilers glands open into which papilla_____________?
A. Foliate
B. Filiform
C. Circumvallate
D. Fungiform

A

C. Circumvallate

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7
Q

Dendritic cell located in the stratified squamous keratinizing epithelium of the oral cavity include_____________?
A. Keratinocytes
B. Mast cells
C. Melanocytes
D. Myoepithelila cells

A

C. Melanocytes

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8
Q

After the eruption of crown, reduced enamel is known as_____________?
A. Primary attachment epithelium
B. Secondary attachment epithelium
C. Primary enamel cuticle
D. Reduced enamel epithelium

A

A. Primary attachment epithelium

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9
Q

The vermilion border requires frequent moistening because_____________?
A. It contains more no. of sweat glands
B. It contains more no. of sebaceous glands
C. It contains less number of sebaceous glands
D. It contains less number of sweat glands

A

C. It contains less number of sebaceous glands

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10
Q

Stippling’s______________?
A. Due to alternate elevations and depressions in epithelium
B. Functional adaptation to mechanical impact
C. Disappeared in progressing gingivitis due to edema and this change is reversible
D. All of the above

A

D. All of the above

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11
Q

Which of the following is non-keratinocyte?
A. Langhan’s cell
B. RBC
C. Langerhans cell
D. Grey cell

A

C. Langerhans cell

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12
Q

Partially keratinized papilla is_______________?
A. Fungiform
B. Filiform
C. Circumvallate
D. Foliate

A

B. Filiform

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13
Q

Keratohyaline granules are more evident in_______________?
A. Keratinised
B. Non keratinized
C. Parakeratinised
D. Orthokeratinized

A

D. Orthokeratinized

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14
Q

Epithelium of the inner surface of the gingival sulcus______________?
A. Has no rete pegs
B. Has prominent rete pegs
C. Is keratinized
D. Is para-keratinized

A

A. Has no rete pegs

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15
Q

Elongated rete pegs are seen in______________?
A. Alveolar mucosa
B. Floor of the mouth
C. Attached gingiva
D. Buccal mucosa

A

C. Attached gingiva

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16
Q

The connective tissue of the gingiva is known as the______________?
A. Lamina dura
B. Dental cuticle
C. Lamina propria
D. Fibroblasts

A

C. Lamina propria

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17
Q

Color of the normal gingiva is_____________?
A. Pink
B. Red
C. Coral pink
D. None of the above

A

C. Coral pink

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18
Q

Epithelium of oral mucous membrane is_______________?
A. Keratinized
B. Non keratinized
C. Ortho, para and non keratinized
D. Only para keratinized

A

C. Ortho, para and non keratinized

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19
Q

The position of mucogingival line____________________?
A. Shifts apically with age
B. Shifts coronally with age
C. Constant throughout the life
D. None of the above

A

C. Constant throughout the life

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20
Q

Keratohyaline granules are found in________________?
A. Stratum granulosum
B. Stratum spinosum
C. Stratum basale
D. Prickle cell layer

A

A. Stratum granulosum

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21
Q

In the tongue bitter taste is more perceived at_____________?
A. Tip
B. Sides
C. Back
D. Front

A

C. Back

22
Q

The major cells seen in gingiva are______________?
A. Fibroblast
B. Odontoblasts
C. Cementoblasts
D. Merkel cells

A

A. Fibroblast

23
Q

Cells of the spinous layer are generally_______________?
A. Larger than the basal cells
B. Smaller than the basal cells
C. same size as that of basal cells
D. None of the above

A

A. Larger than the basal cells

24
Q

Which of the following has immune function in the oral mucous membrane_______________?
A. Melanocyte
B. Merkel cells
C. Langerhan cell
D. Keratinocyte

A

C. Langerhan cell

25
Q

The range of level of fluoride secreted by the glands into the mouth is_____________?
A. 0.004-0.005 ppm
B. 0.006-0.007 ppm
C. 0.007-0.005 ppm
D. 0.007-0.08 ppm

A

C. 0.007-0.005 ppm

26
Q

Protein making up the bulk of keratohyaline granules in stratum granulosum of keratinized epithelium is______________?
A. Involucrin
B. Vinculin
C. Filaggrin
D. Nectin

A

C. Filaggrin

27
Q

Which papillae are completely keratinized______________?
A. Fungiform
B. Filiform
C. Circumvallate
D. Foliate

A

B. Filiform

28
Q

Stratum Germinativum of the oral epithelium is the term given to_______________?
A. Basal cell layer
B. Granular cell layer
C. Spinous cells and granular cells
D. Basal cells and parabasal spinous cells

A

D. Basal cells and parabasal spinous cells

29
Q

The oral epithelium is attached to the enamel via_______________?
A. Reticular fibers
B. Collagen fibers
C. Hemidesmosomes
D. Desmosomes

A

C. Hemidesmosomes

30
Q

Buccal mucosa is_______________?
A. Keratinized
B. Non-keratinized
C. Parakeratinised
D. Orthokeratinized

A

B. Non-keratinized

31
Q

Masticatory mucosa is____________?
A. Parakeratinised
B. Orthokeratinised
C. Non-keratinised
D. Subkeratinised

A

B. Orthokeratinised

32
Q

The anatomic crown is shorter than the clinical crown of a tooth in which of the following instances___________________?
A. Impaction
B. Gingivitis
C. Occlusal wear
D. Gingival recession

A

D. Gingival recession

33
Q

Epithelial attachment is_____________?
A. Attachment of ameloblasts to the tooth
B. Microscopically it resembles basal lamina
C. Derived from secondary attachment epithelium
D. All of the above

A

D. All of the above

34
Q

The mucous membrane of cheeks and lips_____________?
A. It attached to buccinator muscle in cheeks
B. It attached to orbicularis oris in lips
C. A & B are correct
D. None of the above

A

C. A & B are correct

35
Q

The function of merkel cells is_______________?
A. Sensory function
B. Secretory function
C. Neuro sensory
D. Nutritive function

A

C. Neuro sensory

36
Q

Jacobson’s organ is________________?
A. Auxillary olfactory sense organ
B. Ellipsoid/Cigar shaped
C. Undergoes degeneration after 4 months of intrauterine life
D. All of the above

A

D. All of the above

37
Q

Stratum germinatum is_______________?
A. Stratum basale
B. Stratum granulosum
C. Stratum basale and parabasal spinous cells
D. Stratum spinosum

A

C. Stratum basale and parabasal spinous cells

38
Q

Supporting cells of taste buds are called as_____________?
A. Sustenticular cells
B. Taste cells
C. Von ebner cells
D. Acini

A

A. Sustenticular cells

39
Q

Bulk of lamina propria of the gingiva is made of collagen type_______________?
A. I
B. II
C. III
D. IV

A

A. I

40
Q

Minor salivary glands are present in the submucosa through out the oral mucosa except for the______________?
A. Gingiva and anterior part of hard palate
B. Tongue and soft palate
C. Retromolar area and hard palate
D. Lip and posterior third of the hard palate

A

A. Gingiva and anterior part of hard palate

41
Q

Difference between the skin and mucosa of cheek is_______________?
A. Thin lamina and non keratinized mucosa of cheek
B. Keratinized mucosa of cheek
C. Rete pegs
D. Thick lamina propria on skin of cheek

A

A. Thin lamina and non keratinized mucosa of cheek

42
Q

The thinnest epithelium of oral cavity is found in the____________?
A. Buccal gingiva
B. Lingual gingiva
C. Oral surface of lip
D. Sublingual mucosa (floor of mouth)

A

D. Sublingual mucosa (floor of mouth)

43
Q

The red zones of lips have_____________?
A. 30% Sebaceous glands
B. 75% sebaceous glands
C. Very small number of sebaceous glands, if any
D. Absolutely no sebaceous glands

A

C. Very small number of sebaceous glands, if any

44
Q

Masticatory mucosa in the oral cavity covers the_______________?
A. Floor of the mouth and soft palate
B. Alveolar mucosa and vestibular fornix
C. Lip and cheek
D. Gingiva and hard palate

A

D. Gingiva and hard palate

45
Q

Merkel cells are found in which of the following tissue ______________?
A. Epidermis
B. Papillary layer of dermis
C. Reticular of dermis
D. Hypodermis

A

A. Epidermis

46
Q

Non keratinized epithelium is found over___________?
A. Attached gingiva
B. Free gingiva
C. Interdental papilla
D. Gingival sulcus

A

D. Gingival sulcus

47
Q

Stratum granulosum is not present in_____________?
A. Hyper orthokeratosis
B. Hyper parakeratosis
C. Non keratinized epithelium
D. Sulcular epithelium

A

B. Hyper parakeratosis

48
Q

The biological process that connects the epithelium to the tooth surface is known as:
A. Internal basal lamina
B. Junctional epithelium
C. Reduced enamel epithelium
D. Epithelial attachment

A

B. Junctional epithelium

49
Q

Epithelial cells which ultimately keratinize are known as_____________?
A. Keratinizing cells
B. Melanocytes
C. Non-Keratinizing cells
D. Clear cells

A

A. Keratinizing cells

50
Q

Lamina densa of the gingival basement membrane is rich in_____________?
A. Type I and III collagen
B. Type III collagen
C. Type IV collagen
D. Type I collagen

A

C. Type IV collagen

51
Q

In which of the following papillae of the tongue are the taste buds predominantly located?
A. Circumvallate
B. Filliform
C. Foliate
D. Fungiform

A

A. Circumvallate

Oral Histology (8 decks)

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