oral histology MCQs – Page 20

Practise focused oral histology questions with marked answers for exam preparation and subject revision.

oral histology Mcqs

381. In mineralization which one of the following is known as Epitaxy ?
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A. Booster Mechanism

B. Cartier/s Adenosine Triphosphate theory

C. Alkaline Phosphatase theory

D. Seeding theory

382. Which of the following has immune function in the oral mucous membrane_______________?
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A. Merkel cells

B. Keratinocyte

C. Melanocyte

D. Langerhan cell

383. Epithelial attachment is_____________?
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A. Microscopically it resembles basal lamina

B. Attachment of ameloblasts to the tooth

C. Derived from secondary attachment epithelium

D. All of the above

384. Stratum granulosum is not present in_____________?
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A. Non keratinized epithelium

B. Hyper orthokeratosis

C. Hyper parakeratosis

D. Sulcular epithelium

385. Enamel tufts are_______________?
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A. Thin tuft like structure extending from enamel surface of dentin enamel junction

B. Tuft like structure arising from dentin-enamel junction towards enamel surface

C. None of the above

D. Odontoblastic processes extending into enamel

386. Stipplings______________?
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A. All of the above

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

C. Due to alternate elevations and depressions in epithelium

D. Functional adaptation to mechanical impact

387. The vermilion border requires frequent moistening because_____________?
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A. It contains more No. of sweat glands

B. It contains less number of sebaceous glands

C. It contains less number of sweat glands

D. It contains more do. of sebaceous glands

388. The function of merkel cells is_______________?
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A. Secretory function

B. Nutritive function

C. Neuro sensory

D. Sensory function

389. Supporting cells of taste buds are called as_____________?
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A. Von ebner cells

B. Acini

C. Sustenticular cells

D. Taste cells

390. Which papillae are completely keratinized______________?
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A. Circumvallate

B. Filiform

C. Fungiform

D. Foliate

391. Long connective tissue papillae and keratinized epithelia are a feature of these parts of oral mucosa____________?
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A. Hard and soft palate

B. gingiva and alveolar mucosa

C. Hard palate and gingiva

D. Buccal andalveolar mucosa

392. Oral tissue for microscopic examination is prepared by_______________?
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A. Frozen and sectioned

B. Embedded in paradion and sectioned

C. All of the above

D. Specimens ground into thin sections

E. Embedded in paraffin and sectioned

393. Accentuated incremental lines in dentin are______________?
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A. Incremental lines of retzius

B. Contour lines lines of owen

C. None of the above

D. Incremental lines of von Ebner

394. The mucous membrane of cheeks and lips_____________?
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A. None of the above

B. It attached to buccinator muscle in cheeks

C. It attached to orbicularis oris in lips

D. A & B are correct

395. Cells of the spinous layer are generally_______________?
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A. None of the above

B. Larger than the basal cells

C. Smaller than the basal cells

D. same size as that of basal cells

396. perikymata are the external surface manifestations of_____________?
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A. Pellicle

B. Enamel rods

C. Nasmyths membrane

D. Incremental lines of retzius

397. Jacobsons organ is________________?
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A. Auxillary olfactory sense organ

B. Ellipsoid/Cigar shaped

C. All of the above

D. Undergoes degeneration after 4 months of intrauterine life

398. Basement membrane________________?
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A. Contains lamina lucida & Lamina dura

B. consists of desmosomes and hemi desmosomes

C. Consists luratihyaline granules

D. consists of lamina densa and lamina lucida

399. The oral epithelium is attached to the enamel via_______________?
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A. Hemidesmosomes

B. Desmosomes

C. Reticular fibers

D. Collagen fibers

400. Vonebilers glands open into which papilla_____________?
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A. Circumvallate

B. Foliate

C. Filiform

D. Fungiform

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