INBDE Oral Biology and Histology 2

Question 1

The epithelial rests of Malassez are remnants of which structure?

Accepted Answer

Hertwig's epithelial root sheath

Answer

Dental lamina

Answer

Reduced enamel epithelium

Answer

Nasmyth's membrane

Question 2

Which salivary gland produces the most serous secretion?

Accepted Answer

Parotid gland

Answer

Sublingual gland

Answer

Submandibular gland

Answer

Minor labial glands

Question 3

Retzius lines in enamel represent:

Accepted Answer

Incremental lines of enamel matrix deposition

Answer

Areas of enamel hypocalcification

Answer

Directions of enamel rod orientation

Answer

Boundaries between primary and secondary enamel

Question 4

Which cells produce the principal fibers of the periodontal ligament?

Accepted Answer

Fibroblasts

Answer

Cementoblasts

Answer

Osteoblasts

Answer

Undifferentiated mesenchymal cells

Question 5

The neonatal line in primary tooth enamel marks the boundary between:

Accepted Answer

Prenatal and postnatal enamel

Answer

Enamel and dentin

Answer

Crown and root enamel

Answer

Outer and inner enamel

Question 6

Dead tracts in dentin appear black in transmitted light because they contain:

Accepted Answer

Air

Answer

Bacteria

Answer

Blood pigments

Answer

Secondary dentin