medical MCQs – Page 160

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 Review each marked answer and report any item that may be outdated or unclear.

3181. If cementum is not formed______________?
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A. Delayed eruption

B. Exforliation of teeth occur

C. Ankylosis may occur

D. No change occurs

3182. The cells of the enamel organ which differentiate into future ameloblasts are_____________?
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A. Cells of inner enamel epithelium

B. Cells of outer enamel epithelium

C. Cells of stratum intermedium

D. Cells of stellate reticulum

3183. Histologically the dental pulp most closely resembles______________?
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A. Vascular tissue

B. Granulation tissue

C. Loose connective tissue

D. Nerve tissue

3184. Main function of salivary duct is_______________?
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A. Antibacterial action by secreting lysoenzymes and lactoferrin

B. None of the above

C. To convey the saliva secreted by the terminal secretory units to oral cavity

D. Synthesis of secretory glycoproteins by Kallidrein an enzyme in striated duct cells

3186. Collagen biosynthesis occurs inside the______________?
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A. Odontoblasts

B. Fibroblasts

C. Osteoblasts

D. Chondroblasts

3187. Nutrition for ameloblasts after 1st layer of enamel is laid is______________?
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A. Odontoblastic process

B. Ree

C. Dental sac

D. Dental Papilla

3188. Fluid flow, in or out of the dentinal tubules is proportional to the tuble diameter by______________?
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A. Fourth power of the diameter

B. Square of the diameter

C. Sixth power of the diameter

D. Third power of the diameter

3189. The tooth present close to maxillary sinus is_________________?
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A. 1st premolar

B. 2nd premolar

C. 1st molar

D. 2nd molar

3190. Hertwigs epithelial root sheath is made up of_______________?
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A. Outer and inner enamel epithelium

B. Stratum intermedium

C. Stellate reticulum

D. Hyaline layer of Hopewell-smill

3191. The calcified mass found in the PDL are_____________?
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A. Osteoclasts

B. Cementoclasts

C. Cementicles

D. Osteoblasts

3192. The development of pulp begins__________?
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A. 10th week of IU

B. 18th week of IU

C. 8th week of IU

D. 6th week of IU

3193. Lip furrow band is______________?
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A. Vestibular lamina

B. Basal lamina

C. Dental lamina

D. Successional lamina

3195. Physically and chemically, the dentin is closely related to______________?
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A. Enamel

B. None of the above

C. Bone

D. Acellular cementum

3196. Odontoblasts are derived from______________?
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A. Lymphocytes

B. Undifferentiated mesenchymal

C. Macrophages

D. Histocytes

3197. Sharpeys fibres are present in_______________?
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A. Periodontal ligament

B. Bone

C. All of the above

D. Periosteum

3198. Intermediate cementum is___________?
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A. Found at dentinocemental junction

B. Coronal third

C. Apical third

D. Between enamel and cementum

3199. Acellular cementum is typically found in_____________?
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A. Apical half of root

B. Coronal half of root

C. Apex of root

D. Entire root

3200. Outer and inner enamel epithelium first seen in____________?
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A. Cap stage

B. Bud stage

C. Bell stage

D. Advanced bell stage