True about estrogen production in menstrual cycle.: (A) Only by theca cells, (B) Only by granulosa cells, (C) Both theca and granulosa cells, (D) None of the above
Answer is B. Ans (b) Only by granulosa cells(Ref: Ganong, 25th ed/p.414)Estrogen is produced only by granulosa cellsThe theca interna cells supply androstenedione to the granulosa cellsGranulosa cells convert this androstenedione to estradiol with the help of an enzyme "aromatase"