Unusually large numbers of mitochondria are present in the cytoplasm of:
a. Anterior pituitary acidophil cells
b. Anterior pituitary basophil cells
c. Delta cells of the islets of Langerhans
d. Oxyphil cells of the parathyroid gland
e. Parafollicular cells of the thyroid gland
ANS: D
Oxyphil cells of the parathyroid gland represent transformed chief cells that no longer secrete hormone. The reasons why these cells accumulate numerous mitochondria are unknown.
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