A serous demilune is a component of a:
a. Circumvallate papilla
b. Intercalated duct
c. Mucous acinus of the submandibular gland
d. Serous acinus of the parotid gland
e. Striated duct
ANS: C
When salivary glands are fixed, mucus-type secretory cells tend to imbibe water and swell, com-pressing adjacent serous cells into a "caplike" structure at the end of an acinus
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