Mature Graafian follicle is generally present in the ovary of a healthy human female around stet

Explanation

During .oogenesis., the formed gamet mother cells or oogonia in each foetal ovary are called primary oocytes. Each primary oocyte gets sorrounded by a flattened layer of follicular cells. It is called primordial follicle.. The follicles become cuboidal and proliferate to produce stratified epithelium made up of cells called granulosa cells. Follicles at this stage of development are called .primary follicles.. A homogenous membrane, the .zona pellucida. appears between primary oocyte and granulosa cells. The innermost layer of granulosa cells are firmly attached to zona pellucida forming .corona radiata!
A cavity appears in membrane granulosa, it increases in size, wall of follicle becomes thin. As the follicle expands the stromal cells sorrounding the granulosa become condensed to form a covering called inner .theca interna. and outer .theca externa.. Now these follicles are called .secondary follicles..
The cells of theca interna secrete a hormone called Oestrogen. At this stage, the primary oocyte within the secondary follicles grows in size and completes .meiosis I. forming a large haploid .Secondary oocyte and a small .first polar body.. Then the 2nd meoitic division starts but stops at metaphase. The secondary follicle further changes into the nature follicle called .Grafian follicle.. The rupture of graafian follicle by LH results in the release of ovum, a process called ovulation.