Graafian follicle


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Graafian follicle: ovarian follicle, ovulation, corpus luteum

Graafian follicle

a fluid-filled vesicle in the mammalian ovary containing a developing egg cell

Graafian Follicle

 

(named after R. de Graaf), a mul-tilayered saclike follicle that develops in the cortical layer of the ovary of mammals, including humans, under the influence of the follicle-stimulating hormone. The wall of the Graafian follicle consists of an external layer of connective tissue, under which is the multilayered follicular epithelium lining the Graafian follicle cavity, which is filled with a serous liquid. The epithelium forms a process into the Graafian follicle cavity (cumulus oophorus), in which the ovum is located, and provides it with nutrients. The developing follicle produces the hormone estrogen, which prepares the sexual ducts to receive the egg after ovulation, that is, its release from the Graafian follicle and the ovary. The ovulated egg enters the oviduct, where it can join with a spermatozoon and be fertilized. In animals that bear many young at once, several Graafian follicles grow and mature simultaneously.

D. A. POTEMKINA

Graafian follicle

[′gräf·ē·ən ′fäl·ə·kəl]
(histology)
The mature mammalian ovum with its surrounding epithelial cells.
References in periodicals archive ?
However, for the right ovary, mean numbers of active Graafian follicles was significantly (p<0.
Among 92 camels, four had plain ovaries without any Graafian follicles, while 18 had follicles of 5 mm or less in diameter and were considered as inactive.
Visibly, administration of nicotine for 15 days caused a significant decrease in the number of secondary and Graafian follicles (p < 0.
Co-administration of nicotine and melatonin significantly increased number of secondary and Graafian follicles and corpus luteum in compareson with the nicotine only treated mice (Table 1).