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131. The cells that form cementum arise from the
 

a. epithelial diaphragm
b. dental papilla
c. outer enamel epithelium
d. fibroblasts
e. dental sac

 
132. Which one of the following is NOT ectodermal in origin?
 

a. reduced enamel epithelium
b. dental lamina
c. epithelial (Hertwig's) root sheath
d. enamel spindle
e. enamel

133. Cementocytes arise when
 

a. primary cementum is deposited
b. cementoblasts become entrapped by cememtum
c. permanent molars begin to erupt
d. cementoid is converted to cementum
e. permanent  anterior teeth begin to erupt

 
134. Pain originates in the pulp due to
 

a. free nerve endings in the cell rich layer of the pulp
b. free nerve endings in the vicinity of the odontoblastic cells
c. free nerve endings primarily located in the center of the pulp
d. free nerve endings in the cell free zone (of Weil)
e. myelinated nerve fibers in the adjacent part of the dentin

 
135. Which of the following correctly describes the mucosa of the sublingual floor of the

mouth?

a. contains foliate papillae covered by non-keratinized epithelium
b. overlies serous salivary glands
c. has non-keratinized epithelium with no glands in the lamina propria
d. has non-keratinized epithelium with high connective tissue papillae
e. has keratinized epithelium with glands in the lamina propria