medical MCQs – Page 163

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 Review each marked answer and report any item that may be outdated or unclear.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

3241. All of the following is true about dentinal tubules except______________?
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A. Inner pulpal layer contains more dentinal tubules than outer dentin layer

B. The diameter of dentinal tubule is more at pulpal layer than outer layer

C. The diameter of dentin tubules ranges from 5 to 7?m

D. The bonding is more on the inner layer of dentin compared to outer surface

3242. Cells occurring in greatest number in pulp are______________?
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A. Osteoblasts

B. Cementoblasts

C. Fibroblasts

D. Ameloblasts

3243. Order of development of tooth germ is____________?
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A. Bud-cap-bell

B. Cap-bell-bud

C. Bell-cap-bud

D. Bell-bud-cap

3244. Alveolar bone proper is also known as: or Which of the following is seen as lamina dura in an IOPA radiograph ?
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A. Lamina lucida

B. Lamina densa

C. Lamina dura

D. Lamina propria

3245. Dentino enamel junction is_________________?
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A. Straight

B. Scalloped and the convexities are directed towards enamel

C. Non-scalloped

D. Scalloped and the convexities are directed towards dentin

3246. Intermediate cementum is____________?
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A. Highly defined cellular zone near cemento dentinal junction (CDJ)

B. Highly defined fibrillar zone near CDJ

C. Poorly defined zone near cemento-dentinal junction

D. Both a and B

3247. The vascular supply of the periodontal ligament is______________?
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A. A net like plexus that runs closer to the cementum than to the bone

B. A net like plexus that runs closer to the bone than to the cementum

C. Greatest in the middle-third of a single rotted tooth

D. Greatest in the middle-third of a multirooted tooth

3248. Which of the areas of the tooth is most sensitive during cavity preparation ?
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A. Dentinoenamel junction

B. Dentin

C. Enamel (Posterior teeth)

D. Enamel (anterior teeth)

3249. The maxillary sinus______________?
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A. Has good drainage in upright position

B. Is fully developed by the age of 8 years

C. Opens in to the inferior meatus of nose

D. Has the 1st molar projecting into its floor

3250. Cementum formation is seen_______________?
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A. After dentin formation

B. Before dentin formation

C. Both are formed at same time

D. None of the above

3251. The primary function of the dental pulp is____________?
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A. Nutritive

B. Production of enamel

C. Production of dentin

D. Vascular supply to the teeth

3252. First appearance of tooth formation occurs in____________?
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A. 6th week IU

B. 9th week IU

C. 4th week IU

D. 2nd week IU

3253. The average life time of primary pulp in oral cavity is__________?
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A. 7 years

B. 3 years

C. 8.3 years

D. 2 years

3254. Group of fibres, which resist the masticatory forces___________?
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A. Dentogingival

B. Transeptal

C. Horizontal

D. Oblique

3255. In cap stage, regulating factor for cusp shape formation is present in____________?
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A. Dental follicle

B. Enamel Knot

C. Dental papilla

D. Inner enamel epithelium

3256. Major contribution towards gluconeogenesis is by____________?
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A. Glycerol

B. Ketones

C. Lactate

D. Alanine

3257. Keratohyaline granules are found in________________?
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A. St. spinosum

B. Prickle cell layer

C. St. basale

D. St. granulosum

3258. The vermilion border requires frequent moistening because_____________?
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A. It contains more do. of sebaceous glands

B. It contains more No. of sweat glands

C. It contains less number of sweat glands

D. It contains less number of sebaceous glands

3259. perikymata are the external surface manifestations of_____________?
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A. Enamel rods

B. Pellicle

C. Nasmyths membrane

D. Incremental lines of retzius

3260. Sites where HMP shunts can occur include_______________?
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A. All of the above

B. Testes

C. WBC

D. Lactating mammary gland

E. Liver

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