VPY-0092
QUESTION
Testosterone is secreted by?
OPTIONS
(A) Germinal epithelium
(B) Interstitial cells
(C) Sertoli cells
(D) None of the above
ANSWER
(B) Interstitial cells
EXPLANATION
Interstitial cells are the correct option because Leydig or interstitial cells located between the seminiferous tubules synthesize and secrete testosterone under LH stimulation. Germinal epithelium produces developing germ cells, Sertoli cells support spermatogenesis and secrete inhibin and other factors, and therefore neither is the primary source of testosterone.
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