The secretion of estrogen is carried out by the ________ under the...

Follicle Stimulating Hormone (FSH) stimulates the growth and development of ovarian follicles. As the primary follicle develops into a secondary follicle, it acquires multiple layers of granulosa cells and a new theca layer. The theca interna cells, along with the granulosa cells of the growing secondary follicle, are primarily responsible for the secretion of estrogen under the influence of FSH.

Answer: Secondary follicle