Mucous Membrane Most Important MCQs

1 - After the eruption of crown, reduced enamel is known as_____________?

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A. Primary attachment epithelium

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B. Secondary attachment epithelium

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C. Primary enamel cuticle

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D. Reduced enamel epithelium

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Primary attachment epithelium

2 - All of the following is lined by stratified squamous epithelium, except ?

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A. Lips

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B. Tongue

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C. Roof of the soft palate

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D. Oropharynx

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Roof of the soft palate

3 - Basement membrane________________?

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A. Contains lamina lucida & Lamina dura

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B. Consists luratihyaline granules

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C. consists of lamina densa and lamina lucida

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D. consists of desmosomes and hemi desmosomes

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consists of lamina densa and lamina lucida

4 - Biomechanism that unites the epithelium to the tooth surface is_____________?

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A. Internal basal lamina

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B. Junctional epithelium

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C. Reduced enamel epithelium

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D. Epithelial attachment

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Junctional epithelium

5 - Buccal mucosa is_______________?

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A. Keratinized

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B. Non-keratinized

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C. Parakeratinised

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D. Orthokeratinized

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Non-keratinized

6 - Bulk of lamina propria of the gingiva is made of collagen type_______________?

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A. I

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B. II

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C. III

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D. IV

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I

7 - Cells of the spinous layer are generally_______________?

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A. Larger than the basal cells

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B. Smaller than the basal cells

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C. same size as that of basal cells

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D. None of the above

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Larger than the basal cells

8 - Color of the normal gingiva is_____________?

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A. Pink

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B. Red

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C. Coral pink

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D. None of the above

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Coral pink

9 - Dendritic cell located in the stratified squamous keratinizing epithelium of the oral cavity include_____________?

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A. Keratinocytes

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B. Mast cells

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C. Melanocytes

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D. Myoepithelila cells

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Melanocytes

10 - Difference between the skin and mucosa of cheek is_______________?

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A. Thin lamina and non keratinized mucosa of cheek

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B. Keratinized mucosa of cheek

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C. Rete pegs

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D. Thick lamina propria on skin of cheek

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Thin lamina and non keratinized mucosa of cheek

11 - Elongated rete pegs are seen in______________?

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A. Alveolar mucosa

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B. Floor of the mouth

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C. Attached gingiva

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D. Buccal mucosa

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Attached gingiva

12 - Epithelial attachment is_____________?

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A. Attachment of ameloblasts to the tooth

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B. Microscopically it resembles basal lamina

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C. Derived from secondary attachment epithelium

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D. All of the above

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All of the above

13 - Epithelial cells which ultimately keratinize are known as_____________?

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A. Keratinizing cells

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B. Melanocytes

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C. Non-Keratinizing cells

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D. Clear cells

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Keratinizing cells

14 - Epithelium of oral mucous membrane is_______________?

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A. Keratinized

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B. Non keratinized

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C. Ortho, para and non keratinized

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D. Only para keratinized

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Ortho, para and non keratinized

15 - Epithelium of the inner surface of the gingival sulcus______________?

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A. Has no rete pegs

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B. Has prominent rete pegs

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C. Is keratinized

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D. Is para-keratinized

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Has no rete pegs

16 - In the tongue bitter taste is more perceived at_____________?

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A. Tip

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B. Sides

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C. Back

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D. Front

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Back

17 - In which of the following papillae of the tongue are the taste buds predominantly located ?

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A. Circumvallate

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B. Filliform

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C. Foliate

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D. Fungiform

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Circumvallate

18 - Jacobson's organ is________________?

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A. Auxillary olfactory sense organ

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B. Ellipsoid/Cigar shaped

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C. Undergoes degeneration after 4 months of intrauterine life

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D. All of the above

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All of the above

19 - Keratohyaline granules are found in________________?

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A. St. granulosum

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B. St. spinosum

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C. St. basale

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D. Prickle cell layer

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St. granulosum

20 - Keratohyaline granules are more evident in_______________?

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A. Keratinised

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B. Non keratinized

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C. Parakeratinised

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D. Orthokeratinized

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Orthokeratinized

21 - Lamina densa of the gingival basement membrane is rich in_____________?

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A. Type I and III collagen

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B. Type III collagen

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C. Type IV collagen

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D. Type I collagen

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Type IV collagen

22 - Long connective tissue papillae and keratinized epithelia are a feature of these parts of oral mucosa____________?

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A. gingiva and alveolar mucosa

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B. Hard palate and gingiva

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C. Buccal andalveolar mucosa

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D. Hard and soft palate

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Hard palate and gingiva

23 - Masticatory mucosa in the oral cavity covers the_______________?

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A. Floor of the mouth and soft palate

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B. Alveolar mucosa and vestibular fornix

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C. Lip and cheek

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D. Gingiva and hard palate

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Gingiva and hard palate

24 - Masticatory mucosa is____________?

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A. Para keratinised

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B. Ortho keratinised

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C. Non keratinised

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D. Sub keratinised

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Ortho keratinised

25 - Membrane coating granules may_____________?

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A. Appear as circular with an amorphous core in keratinized epithelium

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B. Originate from golgi system

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C. Packed with tonofilaments

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D. Helps in adhesion of fully keratinized epithelial cells

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Originate from golgi system

26 - Merkel cells are found in which of the following tissue ______________?

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A. Epidermis

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B. Papillary layer of dermis

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C. Reticular of dermis

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D. Hypodermis

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Epidermis

27 - Minor salivary glands are present in the submucosa through out the oral mucosa except for the______________?

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A. Gingiva and anterior part of hard palate

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B. Tongue and soft palate

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C. Retromolar area and hard palate

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D. Lip and posterior third of the hard palate

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Gingiva and anterior part of hard palate

28 - Non keratinized epithelium is found over___________?

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A. Attached gingiva

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B. Free gingiva

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C. Interdental papilla

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D. Gingival sulcus

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Gingival sulcus

29 - Partially keratinized papilla is_______________?

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A. Fungiform

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B. Filiform

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C. Circumvallate

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D. Foliate

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Filiform

30 - Protein making up the bulk of keratohyaline granules in stratum granulosum of keratinized epithelium is______________?

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A. Involucrin

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B. Vinculin

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C. Filaggrin

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D. Nectin

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Filaggrin

31 - Stippling's______________?

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A. Due to alternate elevations and depressions in epithelium

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B. Functional adaptation to mechanical impact

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C. Disappeared in progressing gingivitis due to edema and this change is reversible

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D. All of the above

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All of the above

32 - Stratum Germinativum of the oral epithelium is the term given to_______________?

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A. Basal cell layer

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B. Granular cell layer

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C. Spinous cells and granular cells

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D. Basal cells and parabasal spinous cells

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Basal cells and parabasal spinous cells

33 - Stratum germinatum is_______________?

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A. Stratum basale

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B. Stratum granulosum

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C. Stratum basale and parabasal spinous cells

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D. Stratum spinosum

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Stratum basale and parabasal spinous cells

34 - Stratum granulosum is not present in_____________?

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A. Hyper orthokeratosis

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B. Hyper parakeratosis

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C. Non keratinized epithelium

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D. Sulcular epithelium

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Hyper parakeratosis

35 - Supporting cells of taste buds are called as_____________?

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A. Sustenticular cells

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B. Taste cells

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C. Von ebner cells

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D. Acini

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Sustenticular cells

36 - The anatomic crown is shorter than the clinical crown of a tooth in which of the following instances___________________?

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A. Impaction

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B. Gingivitis

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C. Occlusal wear

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D. Gingival recession

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Gingival recession

37 - The connective tissue of the gingiva is known as the______________?

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A. Lamina dura

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B. Dental cuticle

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C. Lamina propria

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D. Fibroblasts

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Lamina propria

38 - The function of merkel cells is_______________?

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A. Sensory function

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B. Secretory function

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C. Neuro sensory

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D. Nutritive function

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Neuro sensory

39 - The high level clear cell present in the oral epithelium is_____________?

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A. Melanocyte

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B. Lymphocyte

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C. Merkel cell

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D. Langerhans cell

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Langerhans cell

40 - The major cells seen in gingiva are______________?

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A. Fibro blast

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B. Odontoblasts

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C. Cementoblasts

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D. Merkel cells

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Fibro blast

41 - The mucous membrane of cheeks and lips_____________?

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A. It attached to buccinator muscle in cheeks

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B. It attached to orbicularis oris in lips

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C. A & B are correct

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D. None of the above

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A & B are correct

42 - The oral epithelium is attached to the enamel via_______________?

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A. Reticular fibers

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B. Collagen fibers

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C. Hemidesmosomes

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D. Desmosomes

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Hemidesmosomes

43 - The position of mucogingival line____________________?

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A. Shifts apically with age

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B. Shifts coronally with age

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C. Constant throughout the life

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D. None of the above

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Constant throughout the life

44 - The range of level of fluoride secreted by the glands into the mouth is_____________?

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A. 0.004-0.005 ppm

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B. 0.006-0.007 ppm

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C. 0.007-0.005 ppm

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D. 0.007-0.08 ppm

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0.007-0.005 ppm

45 - The red zones of lips have_____________?

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A. 30% Sebaceous glands

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B. 75% sebaceous glands

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C. very small number of sebaceous glands, if any

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D. Absolutely no sebaceous glands

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very small number of sebaceous glands, if any

46 - The thinnest epithelium of oral cavity is found in the____________?

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A. Buccal gingiva

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B. Lingual gingiva

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C. Oral surface of lip

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D. Sublingual mucosa (floor of mouth)

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Sublingual mucosa (floor of mouth)

47 - The vermilion border requires frequent moistening because_____________?

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A. It contains more No. of sweat glands

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B. It contains more do. of sebaceous glands

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C. It contains less number of sebaceous glands

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D. It contains less number of sweat glands

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It contains less number of sebaceous glands

48 - Vonebilers glands open into which papilla_____________?

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A. Foliate

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B. Filiform

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C. Circumvallate

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D. Fungiform

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Circumvallate

49 - Which of the following has immune function in the oral mucous membrane_______________?

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A. Melanocyte

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B. Merkel cells

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C. Langerhan cell

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D. Keratinocyte

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Langerhan cell

50 - Which of the following is correct_______________?

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A. Non-keratinized epithelium is characterized by absence of stratum granulosum and stratum corneum, The surface cells are nucleated

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B. Parakeratinished epithelium is characterized by superficial cells with pyknotic nuclei and absence of stratum granulosum

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C. In ortho keratinisation the superficial cells lose their nuclei, but stratum granulosum is present

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D. All of the above

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All of the above

51 - Which of the following is non-keratinocyte ?

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A. Langhan's cell

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B. RBC

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C. Langerhans cell

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D. Grey cell

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Langerhans cell

52 - Which papillae are completely keratinized______________?

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A. Fungiform

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B. Filiform

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C. Circumvallate

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D. Foliate

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Filiform

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