Oral Biology Exam-3 (Quiz MCQ)
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10/4--------------15/4: Exam 3:Quiz (MCQ in: all studied subjects + Data show of histological slides).
- 1.Shedding is predominantly the:
- A.
Physiologic loss of impacted teeth.
- B.
Pathologic loss of non-vital primary teeth.
- C.
Physiologic loss of permanent teeth.
- D.
Physiologic loss of primary teeth.
- 2.The downgrowth of an epithelial thickening buccal to the dental lamina is known as:
- A.
Vestibular lamina.
- B.
Linguo-alveolar Sulcus.
- C.
Lateral dental lamina.
- D.
Successional dental lamina.
- 3.Which would not be present in a ground section?
- A.
Inorganic crystals.
- B.
Odontoblast.
- C.
Interglobular space.
- D.
Dentinal tubules.
- 4.When prismless enamel is formed, the secretory ameloblast does not contain:
- A.
Rough endoplasmic reticulum.
- B.
Tome's process.
- C.
Tome’s fibers.
- D.
Secretory granules.
- 5.Calcified tissues of the tooth are derived from:
- A.
Ectoderm only.
- B.
Endoderm only.
- C.
Mesoderm only.
- D.
Ectoderm & Mesoderm.
- 6.Neonatal lines are present in:
- A.
All permanent teeth.
- B.
Permanent canines.
- C.
All deciduous & first permanent molar.
- D.
Premolars.
- 7.Which of the following occurs during the early stage of eruption of a tooth:
- A.
Differentiation of the stratum intermedium.
- B.
Formation of the dental sac.
- C.
Formation of stellate reticulum.
- D.
Maturation of enamel.
- 8.During shedding of deciduous teeth, the pulp:
- A.
Plays an active role in the process.
- B.
Show sings of degeneration throughout.
- C.
Contain pulp stones.
- D.
Remains vital.
- 9.In a developing tooth, if Hertwig's sheath and the epithelial diaphragm were cut before odontoblasts diffrentiation, the resulting tooth would exhibit:
- A.
No radicular dentin.
- B.
Intermediate cementum.
- C.
Bare dentin.
- D.
Accessory root canals.
- 10.Hypocalcified areas in enamel are:
- A.
Enamel spindles.
- B.
Dentino-enamel junction.
- C.
Interprismatic substances.
- D.
Enamel tufts.
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