A. 1/2 that of enamel
B. 1/7 that of enamel
C. 1/4 that of enamel
D. 1/5 that of enamel
✅ The correct answer is option C. 1/4 that of enamel.
Oral Histology
Which of the following statement is correct?
A. Enamel cannot form in absence of dentin
B. The formation of enamel and dentin are independent of each other
C. Enamel formation can occur in absence of dentin
D. None of the above
✅ The correct answer is option A. Enamel cannot form in absence of dentin.
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
✅ The correct answer is option B. Have high inorganic content.
Interwining of the enamel rods at the cusp timps and the incisal edges of a tooth is called______________?
A. Enamel spindles
B. Gnarled enamel
C. Incremental lies of woven
D. Incremental lines of retzius
✅ The correct answer is option B. Gnarled enamel.
Cementicles are found in the_____________?
A. Gingiva
B. Periodontal ligament
C. Alveolar bone
D. Cementum
✅ The correct answer is option B. Periodontal ligament.
The attached apparatus of tooth is composed of______________?
A. Gingiva, cementum and alveolar bone
B. Gingiva and cementum
C. Cementum and periodontal ligament
D. Peridontal ligament the cementum and the alveolar bone
✅ The correct answer is option D. Peridontal ligament the cementum and the alveolar bone.
Hertwig’s epithelial root sheath is made up of_______________?
A. Outer and inner enamel epithelium
B. Stratum intermedium
C. Stellate reticulum
D. Hyaline layer of Hopewell-smill
✅ The correct answer is option A. Outer and inner enamel epithelium.
Which of the following is correct?
A. Each rod is formed by 4 ameloblasts
B. Each ameloblast contributes to 4 different rods
C. Head of the rod is formed by one ameloblasts, and tail is formed by three other ameloblasts
D. All of the above
✅ The correct answer is option D. All of the above.
Serous demilunes are seen in______________?
A. Salivary glands
B. Pancreas
C. Liver
D. Gastric glands
✅ The correct answer is option A. Salivary glands.
The dental pulp is derived form____________?
A. Dental papilla
B. Dental sac
C. Odontoblasts
D. Stellate reticulum
✅ The correct answer is option A. Dental papilla.