Identify the corpus luteum on this slide of ovary and the very large corpus luteum on this slide. Within the corpus luteum, identify the masses of granulosa lutein cells which produce estradiol. They are partially separated by septa, and surrounded by a thinner layer of less prominent theca lutein cells that produce progesterone.

Examine this slide of ovary and identify a corpus albicans. This ovary specimen from an older individual contains few follicles, but several corpora albicans.

Clinical note: Menopause results when the supply of ovarian follicles is exhausted at about age 50. With loss of the steroid hormones secreted by the follicles, cyclic growth and loss of the uterine endometrium stops. A variety of somatic and emotional changes can occur after menopause.

Now for the testis.