Pancreatic centroacinar cells:
a. Are contractile and promote the movement of secretions
b. Contain clusters of zymogen granules
c. Phagocytize dying cells
d. Remove bile salts from the common bile duct
e. Represent the initial portions of intercalated duct epithelia
ANS: E
Pale-staining centroacinar cells lack the secretory organelles (secretion granules, RER) found in acinar cells.
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A meniscus cushions articulating surfaces of bones.
Answer the following statement true (T) or false (F)
To maintain ________, the body uses a combination of simple diffusion across small distances; wide spread distribution of molecules through the circulatory system and rapid, specific delivery of messages by the nervous system.
Fill in the blank(s) with the appropriate word(s).
A young mouse or rat is a/an __________
Fill in the blank(s) with correct word
What is displayed with an MHC by an APC?
A. Epitope B. MHC protein C. Self antigens D. Foreign antigen