Corpus Albicans

In an ovarian cycle when fertilization does NOT occur, the corpus luteum will start to degenerate within about one week. The degenerating corpus luteum is known as the corpus albicans. The corpus albicans does not secrete high levels of ovarian hormones to maintain the lining of the uterus, leading to menstruation, or a shedding of the uterine lining.

If fertilization of the secondary oocyte occurs, then the corpus luteum will have an extended life of about 3 months until the placenta forms. Still, the corpus luteum will eventually deteriorate into the corpus albicans.

The corpus albicans is essentially a scar that marks the location in the ovary where ovulation occurred. It will continually become smaller over time.

Figure 1: Illustration of the corpus albicans.