What are atretic follicles?

Atretic follicles are ovarian follicles that have undergone a process of degeneration and are no longer viable. During the menstrual cycle, not all developing follicles mature; some undergo atresia, leading to their regression and absorption by the surrounding tissue. This process is a normal part of ovarian function and helps regulate the number of follicles available for potential ovulation. Atretic follicles can be identified histologically by changes in their cellular structure and reduced hormone production.