Oral Histology MCQs

Page No. 14

Among the following the structure that is most calcified is_______________?


aEnamel lamella

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b Enamel rod

✓


cEnamel spindle

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dEnamel tuft

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View Answer Enamel rod

Neonatal line is also referred to as______________?


aRetzius line

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bLine of cross striations

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cIncremental lines

✓


d Line of enamel tufts

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View Answer Incremental lines

Nutritional supply of the ameloblasts during most of their life cycle is from the_____________?


a Dental pulp

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b Odontoblastic processes

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cDental sac

✓


dReduced dental organ

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View Answer Dental sac

Metalloprotienases are used in which stage of the amelogenesis_____________?


aOrganising

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bFormative/ Secretory

✓


cProtective

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d Desmolytic

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View Answer Formative/ Secretory

The class of low molecular weight calcium binding proteins seen predominantly in developing enamel are_____________?


aEnamelin

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bAmelogenin

✓


cTuftelin

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dAmeloplakin

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View Answer Amelogenin

The key hole, pattern appearance in the cross section is feature of______________?


aAprismatic enamel

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b Prismatic enamel

✓


cIntertubular dentin

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dIntratubular dentin

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View Answer Prismatic enamel

The shallow furrows on the enamel surface, where stria of Retzius end are known as _______________ ?


aCracks

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b Pellicle

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c perikymata

✓


dEnamel lamellae

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View Answer perikymata

The average width of enamel rods is______________?


a10mm

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b5mm

✓


c2mm

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d0.5mm

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View Answer 5mm

Dark bonds that are present in enamel rods at intervals of 4 μms are______________?


aNeonantal bands

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bCross striations

✓


cStriae of Retzius

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dHunter-Schregar bands

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View Answer Cross striations

Enamel can act in a sense like a_______________?


aPermeable membrane

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b Impermeable membrane

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c Semipermeable membrane

✓


dInfrapermeable membrane

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