graafian follicle
Graafian follicle
Lutein cells are the glandular-epithelial cells forming the outer layer of the corpus luteum. They develop from cells of the Graafian follicle.
Cecil Mcbottletop
in the Vesicular (Graafian) follicle
FSH stimulates spermatogenesis and development of graafian follicles.LH stimulates secretion of sex hormones,emmits ova and turn graafian follicle into corpus luteum.
The major secretory product of the Graafian follicle is estrogen. Estrogen is a hormone that plays a crucial role in the regulation of the menstrual cycle and in the maintenance of female reproductive health.
When ovulation occurs, the graafian follicle(s) rupture. The oocyte with surrounding cumulus cells (COC's) are expelled into the infundibulum and transported to the site of fertilization. Before and during the rupture of the graafian follicle, blood vessels will rupture too, which causes hemorrhaging. So the structure that is left behind after the oocyte is expelled, is called a corpus hemorrhagicum.
The fimbriae of the fallopian tube catch the product of the Graafian follicle as it leaves the ovary. The fimbriae are finger-like projections at the end of the fallopian tube that sweep over the ovary to capture the released egg during ovulation.
Follicle development occurs in several stages: primordial follicle, primary follicle, secondary follicle, preantral follicle, antral follicle, and mature (Graafian) follicle. Each stage involves specific changes in the follicle and oocyte as they mature towards ovulation.
R.H.F HUNTER has written: 'PHYSIOLOGY OF THE GRAAFIAN FOLLICLE AND OVULATION'
Graafian follicles are mature ovarian follicles that contain a developing oocyte. Their function is to produce estrogen and prepare the egg for ovulation. When the Graafian follicle ruptures during ovulation, it releases the egg into the fallopian tube for possible fertilization.