30

156. Serous secretory cells characteristically
 

a. have a nucleus flattened basally
b. have distinct lateral cell boundaries
c. have relatively vacant apical cytoplasm
d. may form demilunes
e. lack intercellular canaliculi

 
157. Saliva produced during stimulation by eating or by mechanical manipulations during

dental procedures arises principally from the

a. minor salivary glands
b. parotid glands
c. submandibular, sublingual and minor salivary glands
d. submandibular glands
e. sublingual glands

 
158. All of the following become part of the reduced enamel epithelium except
 

a. outer dental epithelium
b. stratum intermedium
c. ameloblast cells
d. epithelial diaphragm
e. stellate reticulum

 
159. Secondary (cellular) cementum differs from alveolar bone in that it
 

a. lacks lacunae
b. lacks hydroxyapatite crystallites
c. resorbs less readily than bone
d. has Sharpey's fibers
e. may exhibit resting lines

160. Lines of von Ebner represent
 

a. cyclic metabolic changes in ameloblasts
b. cyclic metabolic changes in odontoblast activity
c. interglobular dentin
d. increment lines in enamel
e. configuration of secondary curvatures of dentinal tubules

 
161. Developing teeth and dental arches are separated from the developing cheeks by the
 

a. primary epithelial band
b. inner dental epithelium
c. dental lamina
d. vestibular bond or furrow
e. outer dental epithelium