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.
| 351. |
All of the following is true about dentinal tubules except______________? |
| A. | Inner pulpal layer contains more dentinal tubules than outer dentin layer |
| B. | The diameter of dentin tubules ranges from 5 to 7μm |
| C. | The diameter of dentinal tubule is more at pulpal layer than outer layer |
| D. | The bonding is more on the inner layer of dentin compared to outer surface |
| Answer» C. The diameter of dentinal tubule is more at pulpal layer than outer layer | |
| 352. |
All of the following is lined by stratified squamous epithelium, except ? |
| A. | Lips |
| B. | Tongue |
| C. | Roof of the soft palate |
| D. | Oropharynx |
| Answer» D. Oropharynx | |
| 353. |
All of the following cells of periodontal ligament are of mesenchymal origin except______________? |
| A. | Fibroblasts |
| B. | Multi totipotent cells |
| C. | Cementoblasts |
| D. | Cell rests of malassez |
| Answer» E. | |
| 354. |
All of the following are true about functions of dental pulp except______________? |
| A. | Formation of dentin |
| B. | Nerve supply to dentin |
| C. | Sends impulses to CNS |
| D. | Nerve supply to enamel through fibres |
| Answer» E. | |
| 355. |
All factors govering dentine permeability EXCEPT_______________? |
| A. | Smear layer |
| B. | Fluid convection |
| C. | Length of dentinal tubules |
| D. | Diffusion coefficient |
| Answer» C. Length of dentinal tubules | |
| 356. |
All are true regarding the enamel spindles except____________? |
| A. | Produced by ameloblasts |
| B. | Found in the region of cusps |
| C. | Surrounded by inter prismatic enamel |
| D. | Terminate as rounded process |
| Answer» B. Found in the region of cusps | |
| 357. |
All are true about the striae of retzius except___________? |
| A. | Constitute the rest lines with in the enamel rods |
| B. | Have high inorganic content |
| C. | They are areas of increased porosity |
| D. | Allow the movement of water and small ions |
| Answer» C. They are areas of increased porosity | |
| 358. |
Aging process affects pulp tissue by_____________? |
| A. | Decreasing the size and shape of pulp tissue and cellular component |
| B. | Increase cellular component at the expenses of fibre component |
| C. | Increases vascularity of the pulp |
| D. | Decrease the calcific component of the pulp |
| Answer» B. Increase cellular component at the expenses of fibre component | |
| 359. |
Age changes in periodeontal ligament include which of the following ? |
| A. | Increased fibroplasia |
| B. | Increased vascularity |
| C. | Increased thickness |
| D. | Decreased in number of cementicles |
| Answer» B. Increased vascularity | |
| 360. |
After the eruption of crown, reduced enamel is known as_____________? |
| A. | Primary attachment epithelium |
| B. | Secondary attachment epithelium |
| C. | Primary enamel cuticle |
| D. | Reduced enamel epithelium |
| Answer» B. Secondary attachment epithelium | |
| 361. |
Acid neutralizing substance in saliva_____________? |
| A. | NH3 |
| B. | Carbonate |
| C. | Bicarbonate |
| D. | Chlorides |
| Answer» D. Chlorides | |
| 362. |
Acellular cementum is typically found in_____________? |
| A. | Coronal half of root |
| B. | Apical half of root |
| C. | Apex of root |
| D. | Entire root |
| Answer» B. Apical half of root | |
| 363. |
Accessory canals result from____________? |
| A. | Defects in cementogenesis |
| B. | Dividing epithelial bridges |
| C. | Break in Hertwig’s root sheath |
| D. | Adherent epithelial rests |
| Answer» D. Adherent epithelial rests | |
| 364. |
Accentuated incremental lines in dentin due to disturbances in matrix and mineralization process is_____________? |
| A. | Incremental lines of retzius |
| B. | Incremental lines of vonebner |
| C. | Contour lines of owen |
| D. | None of the above |
| Answer» D. None of the above | |
| 365. |
Accentuated incremental lines in dentin are______________? |
| A. | Incremental lines of retzius |
| B. | Incremental lines of von Ebner |
| C. | Contour lines lines of owen |
| D. | None of the above |
| Answer» D. None of the above | |
| 366. |
A supernumerary tooth results from a deviation during_____________? |
| A. | Initiation |
| B. | Differentiation |
| C. | Apposition |
| D. | Calcification |
| Answer» B. Differentiation | |
| 367. |
A suitable fixative for a routine biopsy specimen is_____________? |
| A. | 10% formalin |
| B. | 40% formalin |
| C. | 20% formalin |
| D. | 10% alcohol |
| Answer» B. 40% formalin | |
| 368. |
A special feature of the periodontal ligament fibroblasts is______________? |
| A. | The number or organelles |
| B. | Presence of actin fibres and shape change |
| C. | size of the cells |
| D. | Collagen fibre formation |
| Answer» C. size of the cells | |
| 369. |
A purine which is found in saliva is_______________? |
| A. | Uric acid |
| B. | Thymine |
| C. | Adenosine |
| D. | Hypolithinium |
| Answer» D. Hypolithinium | |
| 370. |
1st formed dental tissue______________? |
| A. | Enamel |
| B. | Dentin |
| C. | Cementum |
| D. | Bone |
| Answer» C. Cementum | |