111. Pulp responds to all stimuli by pain because it has only_______________?
A. Free nerve endings
B. Krause end bulbs
C. Pacinian corpuscle
D. Ruffini corpuscle
✅ The correct answer is option A. Free nerve endings.
Oral Histology
112. The cells of the enamel organ which differentiate into future ameloblasts are_____________?
A. Cells of inner enamel epithelium
B. Cells of outer enamel epithelium
C. Cells of stellate reticulum
D. Cells of stratum intermedium
✅ The correct answer is option A. Cells of inner enamel epithelium.
113. A supernumerary tooth results from a deviation during_____________?
A. Initiation
B. Differentiation
C. Apposition
D. Calcification
✅ The correct answer is option A. Initiation.
114. Root lengthening is contributed by____________?
A. Cellular cementum
B. Acellular cementum
C. Intermediate cementum
D. All of the above
✅ The correct answer is option A. Cellular cementum.
115. Thin leaf like structures that extend from enamel surface in to DEJ are____________?
A. Enamel spindles
B. Enamel lamella
C. Enamel tufts
D. Perikymata
✅ The correct answer is option B. Enamel lamella.
116. The most abundant principle fibre group in periodontal ligament is____________?
A. Horizontal
B. Transeptal
C. Apical
D. Oblique
✅ The correct answer is option D. Oblique.
117. Bulk of lamina propria of the gingiva is made of collagen type_______________?
A. I
B. II
C. III
D. IV
✅ The correct answer is option A. I.
118. The diameter of the rod is______________?
A. 4 μ m
B. 9 μ m
C. 7 μ m
D. 2 μ m
✅ The correct answer is option A. 4 μ m.
119. On microscopic examination enamel rods have___________?
A. Key hole appearance in cross section
B. Paddle appearance in cross section
C. Lanullate appearance in cross-section
D. None of the above
✅ The correct answer is option A. Key hole appearance in cross section.
120. 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
✅ The correct answer is option B. Enamel overlaps cementum.