Without it, early pregnancy cannot be maintained. The ovary is made up of follicles. These tiny fluid-filled sacs each ...

Female: At birth, a girl's pair of ovaries contain up to 1,000,000 follicles, which are hollow balls of cells, each with an immature egg (or ovum) in the center. A girl is born with all the eggs ...

This triggers your ovaries to create follicles, which are sacs containing immature eggs. Yen says around 10 follicles will grow and compete to "win." The follicle that is the strongest will get to ...