MCQOPTIONS
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MCQOPTIONS
This section includes 370 Mcqs, each offering curated multiple-choice questions to sharpen your Medical Subjects knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following structures is not found in a living pulp ? |
| A. | Collagen fibres |
| B. | Haversian fibres |
| C. | Non-myelinated nerve fibres |
| D. | Reticulum |
| Answer» C. Non-myelinated nerve fibres | |
| 2. |
Which of the following structures is not of ectodermal origin_______________? |
| A. | Hunter schreger bands |
| B. | Enamel spindles |
| C. | Enamel tufts |
| D. | Enamel lamellae |
| Answer» C. Enamel tufts | |
| 3. |
Which of the following tissues have no reparative capacity______________? |
| A. | Enamel |
| B. | Dentin |
| C. | Cementum |
| D. | Periodontal ligament |
| Answer» B. Dentin | |
| 4. |
Which papillae are completely keratinized______________? |
| A. | Fungiform |
| B. | Filiform |
| C. | Circumvallate |
| D. | Foliate |
| Answer» C. Circumvallate | |
| 5. |
Which type of collagen fibers demonstrates Chicken wire configuration ? |
| A. | Type I |
| B. | Type II |
| C. | Type III |
| D. | Type IV |
| Answer» E. | |
| 6. |
Width of the periodontal ligament is least at______________? |
| A. | Cervical third |
| B. | Apical third |
| C. | Fulcrum of rotation |
| D. | It has uniform width |
| Answer» D. It has uniform width | |
| 7. |
Width of PDL is_______________? |
| A. | 0.10 mm |
| B. | 0.50 mm |
| C. | 0.25 mm |
| D. | 0.75 mm |
| Answer» D. 0.75 mm | |
| 8. |
Which of the following statement is true______________? |
| A. | Cementum is thinnest at CEJ (20-50μm) |
| B. | Cementum is thickest towards the apex (150-200μm) |
| C. | The apical foramen is surrounded by cementum |
| D. | All of the above |
| Answer» E. | |
| 9. |
Which of the following statement is false______________? |
| A. | Resorption of roots of deciduous incisors and canines begins on their lingual surfaces |
| B. | Resorption of roots of deciduous molars begins on their inner surfaces |
| C. | Shedding of deciduous teeth is delayed in the absence of their successor teeth |
| D. | None of the above |
| Answer» E. | |
| 10. |
Which of the following statement is correct_________________? |
| A. | In cross sections enamel rods appear hexagonal and resembles fish scales |
| B. | The bodies of rods are near occlusal and incisal surfaces, where as the tails point cervically |
| C. | The apatite crystals are parallel to bodies and deviate 65° from the tails |
| D. | All of the above |
| Answer» E. | |
| 11. |
Which of the following is true___________? |
| A. | Pulpal pressure is highest among body tissues |
| B. | Majority of nerve that enter the pulp are non myelinated and are sympathetic in nature |
| C. | Plexus of Rashkow or parietal layers of nerves is formed by network of peripheral axons located adjacent to cell rich zone |
| D. | All of the above |
| Answer» E. | |
| 12. |
Which of the following is true______________? |
| A. | The uncalcified matrix of cementum is called cementoid |
| B. | Cementum contain type I collagen predominantly |
| C. | Cementodentinal junction is sometimes scallopes in deciduous teeth and smooth in permanent teeth |
| D. | All of the above |
| Answer» E. | |
| 13. |
Which of the following is true_____________? |
| A. | All the bones of upper face develop by intra membranous ossification |
| B. | Incus and malleus develops from mecketls cartilage |
| C. | The third auditory ossicle or stapes develops from 2nd branchial arch |
| D. | All of the above |
| Answer» E. | |
| 14. |
Which of the following is true of cellular cementum ? |
| A. | Forms during root formation |
| B. | Forms after the eruption of the tooth |
| C. | Seen at the coronal portion of the tooth |
| D. | Formation is a slow process |
| Answer» C. Seen at the coronal portion of the tooth | |
| 15. |
Which of the following is not true___________? |
| A. | Alveolar bone proper surrounds the root and gives attachment to fibres of periodontal ligament |
| B. | supporting alveolar bone surrounds the alveolar bone proper and supports the socket |
| C. | The cortical plates are thinner in maxilla than in mandible |
| D. | They are thickest in anterior portion of jaw |
| Answer» E. | |
| 16. |
Which of the following is not the principle fibre group of the periodontal ligament___________? |
| A. | Horizontal |
| B. | Oblique |
| C. | Alveolar crest |
| D. | Transseplat |
| Answer» E. | |
| 17. |
Which of the following is not present in saliva________________? |
| A. | Lysozyme |
| B. | Phosphate |
| C. | Bicarbonate |
| D. | Trypsin |
| Answer» E. | |
| 18. |
Which of the following is not an ecto-mesenchymal derivative ? |
| A. | Dentin |
| B. | Cementum |
| C. | Pulp |
| D. | Enamel |
| Answer» E. | |
| 19. |
Which of the following is non-keratinocyte ? |
| A. | Langhan’s cell |
| B. | RBC |
| C. | Langerhans cell |
| D. | Grey cell |
| Answer» D. Grey cell | |
| 20. |
Which of the following is least mineralized ? |
| A. | Cementoid |
| B. | Incremental line |
| C. | Cellular cementum |
| D. | Acellular cementum |
| Answer» B. Incremental line | |
| 21. |
Which of the following is correct_______________? |
| A. | Non-keratinized epithelium is characterized by absence of stratum granulosum and stratum corneum, The surface cells are nucleated |
| B. | Parakeratinished epithelium is characterized by superficial cells with pyknotic nuclei and absence of stratum granulosum |
| C. | In ortho keratinisation the superficial cells lose their nuclei, but stratum granulosum is present |
| D. | All of the above |
| Answer» E. | |
| 22. |
Which of the following is correct about serous glands_____________? |
| A. | They are specialized for the synthesis, storage and secretion of proteins |
| B. | They contain secretory granules in the apical Cytoplasm and the secretion of granule content occurs by exocrytosis |
| C. | Serous cells are pyramidal in shape |
| D. | All of the above |
| Answer» E. | |
| 23. |
Which of the following is correct about enamel crystals ? |
| A. | Same as dentin crystals |
| B. | Contains organic portion in the center |
| C. | Roughly texagonal in shape |
| D. | Their diameter is about 5 microns in size |
| Answer» D. Their diameter is about 5 microns in size | |
| 24. |
Which of the following is a rare occurrence______________? |
| A. | Enamel meet cementum at a point |
| B. | Enamel overlaps cementum |
| C. | Cementum overlaps enamel |
| D. | Both never meet |
| Answer» C. Cementum overlaps enamel | |
| 25. |
Which of the following has immune function in the oral mucous membrane_______________? |
| A. | Melanocyte |
| B. | Merkel cells |
| C. | Langerhan cell |
| D. | Keratinocyte |
| Answer» D. Keratinocyte | |
| 26. |
Which of the following groups of fibres are not attached to alveolar bone ? |
| A. | Transseptal |
| B. | Horizontal |
| C. | Oblique |
| D. | Apical |
| Answer» B. Horizontal | |
| 27. |
Which of the following factors are primarily contributory to the shedding of deciduous tooth ? |
| A. | Hydrostatic |
| B. | Vascular pressure |
| C. | Oncotic pressure |
| D. | Masticatory pressure |
| Answer» E. | |
| 28. |
Which of the following enzymes are involved in bone formation________________? |
| A. | Alkaline phosphatase and urease |
| B. | Catalase and phosphorylase |
| C. | Alkaline phosphatase and phosphorylase |
| D. | Acid phosphatase and catalase |
| Answer» D. Acid phosphatase and catalase | |
| 29. |
Which of the following dentinal layers is more mineralized______________? |
| A. | Peritubular dentin |
| B. | Inter tubular dentin |
| C. | Dentinal tubules |
| D. | Circum pulpal dentin |
| Answer» B. Inter tubular dentin | |
| 30. |
Which of the following anomalies occur during the initiation and proliferation of tooth development ? |
| A. | Amelogenisis imperfecta |
| B. | Dentinogenesis imperfecta |
| C. | Enamel hypoplasia |
| D. | Oligodontia |
| Answer» E. | |
| 31. |
Which of the areas of the tooth is most sensitive during cavity preparation ? |
| A. | Enamel (anterior teeth) |
| B. | Enamel (Posterior teeth) |
| C. | Dentin |
| D. | Dentinoenamel junction |
| Answer» E. | |
| 32. |
Which enzyme is associated with the mineralization_____________? |
| A. | Acid phosphatase |
| B. | Alkaline phosphatase |
| C. | Adenosine triphosphate |
| D. | Amino peptidase |
| Answer» C. Adenosine triphosphate | |
| 33. |
Which dental tissue doesn’t contain nerves ? |
| A. | Bone |
| B. | Dentin |
| C. | Cementum |
| D. | Pulp |
| Answer» D. Pulp | |
| 34. |
When osteoblast lay new bone from outside to inside in a osteon, the active formation area is called________________? |
| A. | Haversion cone |
| B. | Filling cone |
| C. | Cutting cone |
| D. | Howships cone |
| Answer» C. Cutting cone | |
| 35. |
Wharton’s duct drains the_______________? |
| A. | Pancreas |
| B. | Parotid |
| C. | Lacrimal gland |
| D. | Submandibular gland |
| Answer» E. | |
| 36. |
Weil’s zone of pulp is__________? |
| A. | Cell degenerated zone |
| B. | Cell rich zone |
| C. | Cell regenerated zone |
| D. | cell free zone |
| Answer» E. | |
| 37. |
Vonebners gland are_______________? |
| A. | glands at apex of tongue |
| B. | Posterior lingual mucous glands |
| C. | Posterior lingual serous glands |
| D. | Glosso palatine glands |
| Answer» D. Glosso palatine glands | |
| 38. |
Vonebilers glands open into which papilla_____________? |
| A. | Foliate |
| B. | Filiform |
| C. | Circumvallate |
| D. | Fungiform |
| Answer» D. Fungiform | |
| 39. |
Vitality of pulp depends on________________? |
| A. | Blood supply |
| B. | Nerve supply |
| C. | Lymphatic supply |
| D. | All of the above |
| Answer» B. Nerve supply | |
| 40. |
Unmyelinated nerve fibres of pulp are____________? |
| A. | Sensory in nature |
| B. | Respond to hot and cold |
| C. | carry pain sensation |
| D. | Associated with blood vessels and are sympathetic in nature |
| Answer» E. | |
| 41. |
True about osteoclasts_____________? |
| A. | Monocytes are precursor cells of osteoclasts |
| B. | The plasma membrane of osteoclasts adjacent to bone that is being resorbed is known as striated or ruffled border |
| C. | Contain lysosomes with acid phosphates |
| D. | All of the above are true |
| Answer» E. | |
| 42. |
True about myoepithelial cell______________? |
| A. | Also known as basket cell |
| B. | Structure is similar to smooth muscle and contains actin & myosin |
| C. | The cell expel secretions by contraction |
| D. | All of the above |
| Answer» E. | |
| 43. |
True about direction of enamel rods______________? |
| A. | They originate at right angle to dentin surface |
| B. | They are almost vertical near the incisal edge (or) cusp tip areas |
| C. | In the cervical third of deciduous crowns they are almost horizontal in direction |
| D. | In cervical region of permanent teeth, they deviate in apical direction |
| E. | All of the above |
| Answer» F. | |
| 44. |
Trauma or excessive occlusal forces causes_____________? |
| A. | Hyperplasia of cementum |
| B. | Hypertrophy of cementum |
| C. | Resorption of cementum |
| D. | None of the above |
| Answer» D. None of the above | |
| 45. |
Transmission of stimulus across dentin is______________? |
| A. | Direct activation of nerve endings |
| B. | Correlated with the innervation density of the dentin |
| C. | Stimulus induced fluid flow |
| D. | There is no transmission of stimulus across dentin |
| Answer» D. There is no transmission of stimulus across dentin | |
| 46. |
Total volume of saliva secreted by submandibular gland daily is______________? |
| A. | 750 ml |
| B. | 450 ml |
| C. | 1500 ml |
| D. | 1000 ml |
| Answer» C. 1500 ml | |
| 47. |
Tooth eruption is due to______________? |
| A. | Osteoclastic activity |
| B. | Proliferation of cells at crypt |
| C. | Exforliation of primary tooth |
| D. | Eruptive force |
| Answer» E. | |
| 48. |
Tooth develops from_______________? |
| A. | Ectoderm, mosoderm |
| B. | Ectoderm |
| C. | Mesoderm |
| D. | Ectoderm and endoderm |
| Answer» B. Ectoderm | |
| 49. |
Tooth buds of permanent mandibular incisors are situated_____________? |
| A. | Lingual to primary teeth |
| B. | Inferior to primary teeth |
| C. | Labial to primary teeth |
| D. | A and B |
| Answer» E. | |
| 50. |
Tome’s firbres are____________? |
| A. | With out but not with in the dentin |
| B. | Odontoblastic processes in dental tubules |
| C. | Type of sharpey’s fibres |
| D. | Originate from tome’s granular layer |
| Answer» C. Type of sharpey’s fibres | |