medical MCQs – Page 507

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 Review each marked answer and report any item that may be outdated or unclear.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

10121. Chronic periapical inflammation is usually associated with____________?
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A. Hypertrophy of cementum

B. Ankylosis

C. Hyperplasia of cementum

D. Resorption of cementum

10122. The diameter of the largest arterial vessels in the pulp range from_____________?
0

A. 201-250 ?m

B. 151-200 ?m

C. 101-150 ?m

D. 50-100 ?m

10123. The primary function of the dental pulp is____________?
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A. Nutritive

B. Production of dentin

C. Vascular supply to the teeth

D. Production of enamel

10124. Weils zone of pulp is__________?
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A. Cell degenerated zone

B. Cell regenerated zone

C. cell free zone

D. Cell rich zone

10125. Shape of crown and the size of the roots is determined by______________?
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A. Cementum

B. Enamel

C. Dentin

D. Pulp

10126. Enamel is laid down______________?
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A. Only on odontoblasts

B. Mainly by odontoblasts

C. Mainly by ameloblasts

D. Only by ameloblasts

10127. Enamel rods at the cervical area at the occlusal edge and incisal lip in permanent teeth are______________?
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A. Bent

B. Shallow

C. Curved

D. Straight

10128. The cell free zone in pulp lies____________?
0

A. In pulp horn

B. Above odontoblast

C. In radicular pulp

D. Below odontoblast

10129. The type of tertiary dentin which contains cellular inclusions is found in_____________?
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A. Osteodentin

B. Mantle dentin

C. Sclerotic dentin

D. Predentin

10130. The cap stage in tooth development is characterized by_____________?
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A. Formation of hammock ligament

B. Increased mitotic activity

C. reversal of functional polarity

D. morphodifferentiation

10131. The dentin adjacent to the dentinoenamel junction is called the______________?
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A. Circumpulpal dentin

B. Mantle dentin

C. Predentin

D. Secondary dentin

10132. All of the following are true about functions of dental pulp except______________?
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A. Formation of dentin

B. Nerve supply to enamel through fibres

C. Sends impulses to CNS

D. Nerve supply to dentin

10133. Secondary cementum is generally confined to_____________?
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A. Cervical third of the root

B. No secondary cementum forms

C. Apical third of the root

D. Middle third of the root

10134. Protein secreted by odontoblast_____________?
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A. Collagen

B. Elastin

C. Chitin

D. Keratin

10135. Length of enamel rods is_____________?
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A. Greater than the thickness of enamel

B. None of the above

C. Equal to the thickness of enimal

D. Less than the thickness of enamel

10136. In adult teeth, the type of dentin present underlying dentin-enamel junction is_______________?
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A. Tertiary dentin

B. Interglobular dentin

C. Mantle dentin

D. Predentin

10137. Interdependency of osteoblasts and osteoclasts in bone remodeling is called as_____________?
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A. Reversal lines

B. Canaliculi

C. Lacunae

D. Coupling

10138. The successors of deciduous teeth develops form_______________?
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A. Stellate reticulum

B. Successional lamina

C. Neutral ectodermal cells

D. Dental lamina

10139. Dead tracts in ground section appears as_____________?
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A. Coarse fibril bundles arranged at right angle to the dentinal surface

B. White in transmitted light and dark in reflected light

C. Black in transmitted light and white in reflected light

D. Dentinal tubules

10140. Neonatal line is also referred to as______________?
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A. Retzius line

B. Incremental lines

C. Line of enamel tufts

D. Line of cross striations

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