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| Ovarian Follicle Graafian Follicle | Atretic Follicle | Atretic Follicles | Follicle, Atretic | Follicle, Graafian | Follicle, Ovarian | Follicles, Atretic | Follicles, Graafian | Follicles, Ovarian | 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. | |
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