medical MCQs – Page 154

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 Review each marked answer and report any item that may be outdated or unclear.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

3061. The condyle of mandible is composed of____________________?
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A. Compact bone covered by cancellous bone

B. Compact bone

C. Cancellous bone

D. Cancellous bone covered by thin layer of compact bone

3062. Dentinal tubules are calcified in_______________?
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A. Interglobular dentin

B. Primary dentin

C. Secondary dentin

D. Sclerotic dentin

3063. The formation of which of the following does not represent normal physiologiacl process of dentin formation_______________?
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A. Tetiary dentin and sclerotic dentin

B. All of the above

C. Secondary dentin and circumpulpal dentin

D. Primary and secondary dentin

3064. Hardness of fully mineralized cementum is_____________?
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A. Equal dentin

B. Less than dentin

C. None of the above

D. More than dentin

3065. Accentuated incremental lines in dentin due to disturbances in matrix and mineralization process is_____________?
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A. None of the above

B. Incremental lines of retzius

C. Incremental lines of vonebner

D. Contour lines of owen

3066. Formula of hydroxyapatite crystal is____________?
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A. Ca3 (Po4)2 CaCo3

B. CaPo4 Ca(OH)2

C. 3Ca (Po4)2 Ca(OH)2

D. None of the above

3067. Among various glands, salivary gland secretion is unique in that, its secretions is unique in that, its secretion are controlled by___________?
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A. Nerves

B. All of the above

C. Hormones

D. Chemicals

3068. The size of apical foramen of maxillary teeth in adult is______________?
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A. 0.3 mm

B. 0.4 mm

C. 0.7 mm

D. 0.2 mm

3069. Which of the following is least mineralized ?
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A. Cementoid

B. Cellular cementum

C. Incremental line

D. Acellular cementum

3070. Maxillary sinus is described as a four sided pyramid containing base, apex, roof and floor. The apex of maxillary sinus extends________________?
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A. Medially into zygomatic process of maxilla

B. Superiorly into floor of orbit

C. Laterally into lateral nasal wall

D. Laterally into zygomatics process of maxilla

3071. The main bulk of dentin is formed by______________?
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A. Predentin

B. Mantle dentin

C. Inter tubular dentin

D. Peritubular dentin

3072. Stellate reticulum is seen in______________?
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A. Enamel organ

B. Dental lamina

C. All of the above

D. Hertwigs root sheath

3073. 1st formed dental tissue______________?
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A. Enamel

B. Dentin

C. Cementum

D. Bone

3074. The process of recesses formation in maxillary sinus is most frequently seen with________________?
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A. Alveolar process

B. Palatine process

C. Frontal process

D. Zygomatic process

3075. Cementum_____________?
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A. Is derived from the sheath of hertwig

B. Does not contain collagen fibres

C. Is acellular in the apical third of the tooth

D. Often overlaps the enamel

3076. The periodontal ligament is approximately_____________?
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A. 0.75 mm in thickness

B. 0.25 mm in thickness

C. 0.5 mm in thickness

D. mm in thickness

3077. Which of the following anomalies occur during the initiation and proliferation of tooth development ?
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A. Enamel hypoplasia

B. Dentinogenesis imperfecta

C. Oligodontia

D. Amelogenisis imperfecta

3078. Unmyelinated nerve fibres of pulp are____________?
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A. Respond to hot and cold

B. carry pain sensation

C. Associated with blood vessels and are sympathetic in nature

D. Sensory in nature

3079. Dental lamina is active up to_______________?
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A. 1 year

B. 4 years

C. 2 years

D. 3 years

3080. Bone adjacent to periodontal ligament that contains a great number of sharpeys fibres is known as______________?
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A. Lamina propria

B. Bundle bone

C. Lamina densa

D. Lamina dura

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