Tags: Anatomical Structure.
The cumulus oophorus (Latin cumulus=heap Greek oo=egg + phor=carrier; Latinized ending -us) also called discus proligerus is a cluster of cells (called cumulus cells) that surround the oocyte both in the ovarian follicle and after ovulation. In the antral follicle it may be regarded as an extension of the membrana granulosa. The innermost layer of these cells is the corona radiata.This layer of cells must be penetrated by the spermatozoa in order for fertilization to occur.
