medical MCQs – Page 506

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 Review each marked answer and report any item that may be outdated or unclear.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

10101. Pulp responds to all stimuli by pain because it has only_______________?
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A. Ruffini corpuscle

B. Pacinian corpuscle

C. Krause end bulbs

D. Free nerve endings

10102. Trauma or excessive occlusal forces causes_____________?
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A. None of the above

B. Hyperplasia of cementum

C. Hypertrophy of cementum

D. Resorption of cementum

10103. Which of the following is not the principle fibre group of the periodontal ligament___________?
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A. Transseplat

B. Alveolar crest

C. Horizontal

D. Oblique

10104. The most accepted theory for dentin sensitivity is: or Which of the following is the most accepted theory of transmission of dental sensation_____________?
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A. Transduction theory

B. Direct neural stimulation

C. Hydrodynamic theory

D. Hydrostatic theory

10105. Interwining of the enamel rods at the cusp timps and the incisal edges of a tooth is called______________?
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A. Enamel spindles

B. Incremental lies of woven

C. Gnarled enamel

D. Incremental lines of retzius

10106. Blood supply of ameloblast for most of its life cycle comes form_______________?
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A. Dental pulp

B. Reduced enamel organ

C. Dental Sac

D. Dental papilla

10107. Periodontal ligament has predominantly_________?
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A. Elastic fibres

B. Type II collagen fibres

C. Type I collagen fibres

D. Oxytalan fibres

10108. Fibres of periodontal ligament embedded in the bone are_____________?
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A. Rays fibres

B. Sharpeys fibres

C. Elastic fibres

D. Tomes fibres

10109. Bone adjacent to periodontal ligament that contains a great number of sharpeys fibres is known as______________?
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A. Lamina dura

B. Lamina propria

C. Bundle bone

D. Lamina densa

10110. Cells occurring in greatest number in pulp are______________?
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A. Fibroblasts

B. Osteoblasts

C. Cementoblasts

D. Ameloblasts

10111. High levels of albumin is present in____________?
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A. Stellate reticulum

B. Stratum intermedium

C. Outer enamel epithelium

D. Inner enamel epithelium

10112. Hunter Schreger band are____________?
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A. Dark and light bands of enamel seen in longitudinal ground section

B. Dark and light brands of dentin seen in longitudinal section

C. Dark and light bands of enamel seen in horizontal ground section

D. Dark and light bands of dentin seen in horizontal

10113. If overgrowth of cementum does not improve the functional qualities of cementum, it is termed as_____________?
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A. Hypoplasia

B. Hypertrophy

C. Excementoses

D. Hyperplasia

10114. Formula of hydroxyapatite crystal is____________?
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A. 3Ca (Po4)2 Ca(OH)2

B. Ca3 (Po4)2 CaCo3

C. None of the above

D. CaPo4 Ca(OH)2

10115. Principal fibres of periodontal ligament are attached to_____________?
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A. Lamellar bone

B. Alveolar bone proper

C. Bundle bone

D. Cortical bone

10116. Which of the following statement is correct?
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A. Enamel cannot form in absence of dentin

B. Enamel formation can occur in absence of dentin

C. The formation of enamel and dentin are independent of each other

D. None of the above

10117. Matrix vesicles_______________?
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A. Contain collagen

B. Produce alkaline phosphatase

C. Inhibit mineralization

D. Are found in mantle dentin

10118. Collagen molecule exhibits all of the following features except_____________?
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A. Mostly contains glycine residues

B. Intracellular in nature

C. Triple pleated sheath

D. Exhibit cross striations at 64 ?m

10119. The cells that form secondary dentin are_______________?
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A. Cementoblasts

B. Odontoblasts

C. Osteoblasts

D. Fibroblasts

10120. Cellular cementum and compact bone contain____________?
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A. Canaliculi and incremental lines

B. Sharpehys fibres and elastic fibres

C. Collagen fibres and blood vessels

D. Lacunae and elastic fibres

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