A. Pulp canal
B. Pulp chamber
C. Mental foramen
D. Apical foramen
✅ The correct answer is option D. Apical foramen.
Oral Histology
262. Alveolar bone proper is also known as: or Which of the following is seen as lamina dura in an IOPA radiograph ?
A. Lamina lucida
B. Lamina densa
C. Lamina propria
D. Lamina dura
✅ The correct answer is option D. Lamina dura.
263. The cells of the dental pulp which are responsible for the deposition of reparative dentin are_________?
A. Osteoblasts
B. Odontoblasts
C. Ameloblasts
D. Osteocytes
✅ The correct answer is option B. Odontoblasts.
264. Basal bone is____________?
A. That part of the bone embracing apices of root of teeth
B. Lower border of the mandible
C. Ramus of the mandible
D. That part of the bone containing teeth
✅ The correct answer is option A. That part of the bone embracing apices of root of teeth.
265. Centre of the disc in TMJ is_____________?
A. Avascular
B. Devoid of nervous tissue
C. Avascular & deviod of nervous tissue
D. None of the above
✅ The correct answer is option C. Avascular & deviod of nervous tissue.
266. If cementum is not formed______________?
A. Ankylosis may occur
B. Exforliation of teeth occur
C. Delayed eruption
D. No change occurs
✅ The correct answer is option B. Exforliation of teeth occur.
267. The percentage of inorganic matter in fully developed enamel is about____________?
A. 66%
B. 76%
C. 86%
D. 96%
✅ The correct answer is option D. 96%.
268. Width of the periodontal ligament is least at______________?
A. Cervical third
B. Apical third
C. Fulcrum of rotation
D. It has uniform width
✅ The correct answer is option C. Fulcrum of rotation.
269. Epithelial cells which ultimately keratinize are known as_____________?
A. Keratinizing cells
B. Melanocytes
C. Non-Keratinizing cells
D. Clear cells
✅ The correct answer is option A. Keratinizing cells.
270. Trauma or excessive occlusal forces causes_____________?
A. Hyperplasia of cementum
B. Hypertrophy of cementum
C. Resorption of cementum
D. None of the above
✅ The correct answer is option C. Resorption of cementum.