Ovarian Follicle


Atretic Follicle

Atretic Follicles

Follicle, Atretic

Follicle, Graafian

Follicle, Ovarian

Follicles, Atretic

Follicles, Graafian

Follicles, Ovarian

Graafian Follicle

Graafian Follicles

Ovarian Follicles

An OOCYTE-containing structure in the cortex of the OVARY. The oocyte is enclosed by a layer of GRANULOSA CELLS providing a nourishing microenvironment (FOLLICULAR FLUID). The number and size of follicles vary depending on the age and reproductive state of the female. The growing follicles are divided into five stages: primary, secondary, tertiary, Graafian, and atretic. Follicular growth and steroidogenesis depend on the presence of GONADOTROPINS.