Give the Structure of Graafian follicle
Answers
Structure of Graafian follicle :
Graafian follicle is a mature ovarian
follicle. An eccentric secondary oocyte is
surrounded by a non-cellular layer of zona
pellucida secreted by the vitelline membrane
of oocyte. The outermost protective and fibrous
covering is called theca externa. Inner to it is
cellular theca interna. It produces the hormone
estrogen. Inner to the theca interna, the follicular
cells form the membrana granulosa. From the
membrana granulosa the cells differentiate
into discus proligerus and the corona radiata
cells. Cumulus oophorus is the term used for
the oocyte and surrounding granulosa cells . A
fluid filled cavity called antrum lies between
the oocyte and the membrana granulosa. It is
filled with a fluid called liquor folliculi.
Answer:
Graafian follicle (ovarian follicle) The fluid-filled cavity that surrounds and protects the developing egg cell (oocyte) in the ovary of a mammal. The oocyte is surrounded by granulosa cells, which secrete fluid into the cavity of the follicle. After the release of the ovum the follicle develops into a corpus luteum.
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