251. Length of enamel rods is_____________? September 27, 2025 by Admin A. Greater than the thickness of enamel B. Less than the thickness of enamel C. Equal to the thickness of enimal D. None of the above ✅ The correct answer is option A. Greater than the thickness of enamel.
252. Basement membrane________________? September 27, 2025 by Admin A. Contains lamina lucida & Lamina dura B. Consists luratihyaline granules C. consists of lamina densa and lamina lucida D. consists of desmosomes and hemi desmosomes ✅ The correct answer is option C. consists of lamina densa and lamina lucida.
253. The number of pulp organs in a person in___________? September 27, 2025 by Admin A. 32 B. 50 C. 52 D. 62 ✅ The correct answer is option C. 52.
254. Stratum Germinativum of the oral epithelium is the term given to_______________? September 27, 2025 by Admin A. Basal cell layer B. Granular cell layer C. Spinous cells and granular cells D. Basal cells and parabasal spinous cells ✅ The correct answer is option D. Basal cells and parabasal spinous cells.
255. Dead tracts in ground section appears as_____________? September 27, 2025 by Admin A. Dentinal tubules B. Coarse fibril bundles arranged at right angle to the dentinal surface C. Black in transmitted light and white in reflected light D. White in transmitted light and dark in reflected light ✅ The correct answer is option C. Black in transmitted light and white in reflected light.
256. Dark bonds that are present in enamel rods at intervals of 4 μms are______________? September 27, 2025 by Admin A. Neonantal bands B. Cross striations C. Striae of Retzius D. Hunter-Schregar bands ✅ The correct answer is option B. Cross striations.
257. Dentinal tubules are calcified in_______________? September 27, 2025 by Admin A. Sclerotic dentin B. Primary dentin C. Secondary dentin D. Interglobular dentin ✅ The correct answer is option A. Sclerotic dentin.
258. The function of myoepithelial cells may be______________? September 27, 2025 by Admin A. Initiating contraction B. Support for the end piece during active secretion of saliva C. Provide signals to the acinar secretary cells for structure organization D. All of the above ✅ The correct answer is option D. All of the above.
259. At the CEJ cementum overlaps enamel about____________? September 27, 2025 by Admin A. 55 to 60% B. 60 to 65% C. 65 to 70% D. 70 to 75% ✅ The correct answer is option B. 60 to 65%.
260. Specific gravity of enamel is_____________? September 27, 2025 by Admin A. 2.8 B. 3.8 C. 4.8 D. 2.3 ✅ The correct answer is option A. 2.8.