True about osteoclasts_____________?

Related Mcqs:

1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. Which of the following is true?

   A. Maxillary sinus communicates with environment through middle meatus and nasal vestibule
   B. Maxillary sinus is four- sided pyramid
   C. In most of the cases, the main ostium is present in posterior third of hiatus semilunar
   D. All of the above

8. Which of the following is true?

   A. Cutting cone or resorption tunnel is the area of resorption seen in alveolar bone
   B. CAMP or cyclic adenosine monophosphate levels are increased on pressure side of bone and this results in bone resorption
   C. Immature born / embryonic bone seen during fracture healing contains less calcified material and greater number of large osteocytes
   D. All of the above

9. 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

10. All the following features of skull of a newborn are true except_____________?

    A. Diploe not formed
    B. Styloid process has not fused with rest of temporal bone
    C. Anterior fontanelle open
    D. Mastoid process is of adult size