medical MCQs – Page 157

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

3121. Nutritional supply of the ameloblasts during most of their life cycle is from the_____________?
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A. Dental sac

B. Dental pulp

C. Odontoblastic processes

D. Reduced dental organ

3122. Chronological hypoplasia is_____________?
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A. None of the above

B. Hypoplasia of systemic origin

C. Hypoplasia of hereditary origin

D. Hypoplasia of local origin

3123. Regressive changes in pulp include____________?
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A. All of the above

B. Increased fibrotic component

C. Calcification in blood vessels near apical foramen

D. Decreased cellular component

3124. Intermediate plexus is seen in the____________?
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A. Dentin

B. Pulp

C. PDL

D. Cementum

3125. Dentin formed through out the life is______________?
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A. Sclerotic dentin

B. All of the above

C. Reparative dentin

D. Secondary dentin

3126. Which of the following statement is true______________?
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A. The apical foramen is surrounded by cementum

B. All of the above

C. Cementum is thickest towards the apex (150-200?m)

D. Cementum is thinnest at CEJ (20-50?m)

3127. Saliva is secreted by____________?
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A. Parotid gland

B. Major salivary glands

C. Minor salivary glands

D. Major & minor salivary glands

3128. Centre of the disc in TMJ is_____________?
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A. Avascular & deviod of nervous tissue

B. Avascular

C. None of the above

D. Devoid of nervous tissue

3129. When osteoblast lay new bone from outside to inside in a osteon, the active formation area is called________________?
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A. Filling cone

B. Cutting cone

C. Haversion cone

D. Howships cone

3130. The successors of deciduous teeth develops form_______________?
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A. Dental lamina

B. Stellate reticulum

C. Successional lamina

D. Neutral ectodermal cells

3131. A special feature of the periodontal ligament fibroblasts is______________?
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A. Collagen fibre formation

B. Presence of actin fibres and shape change

C. size of the cells

D. The number or organelles

3132. Excess deposition of calcium in the dentinal tubules is referred to as______________?
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A. Mantal dentin

B. Interglobular dentin

C. Intertubular dentin

D. Sclerotic dentin

3133. Formation of dentin by odontoblasts begins in_______________?
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A. Morphogenic stage

B. Formative stage

C. Desmolytic stage

D. Organizing stage

3134. Cellular cementum and compact bone contain____________?
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A. Sharpehys fibres and elastic fibres

B. Lacunae and elastic fibres

C. Collagen fibres and blood vessels

D. Canaliculi and incremental lines

3135. In mammals independent and tough suspension for teeth is provided by____________?
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A. Alveolar sockets

B. Gubernacular cords

C. Periodontal membrane

D. Cementum

3136. Weils zone of pulp is__________?
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A. Cell rich zone

B. Cell degenerated zone

C. Cell regenerated zone

D. cell free zone

3137. The most abundant principle fibre group in periodontal ligament is____________?
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A. Apical

B. Horizontal

C. Oblique

D. Transeptal

3138. Root lengthening is contributed by____________?
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A. Cellular cementum

B. Intermediate cementum

C. All of the above

D. Acellular cementum

3139. A supernumerary tooth results from a deviation during_____________?
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A. Calcification

B. Apposition

C. Differentiation

D. Initiation

3140. Korffs fibres are seen in______________?
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A. Mantle dentin

B. Secondary dentin

C. Reactionary dentin

D. Indeed dermal tubules

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