What part of ovary secretes progesterone?AMedullaBEpithelial coveringCGraafian follicleDCorpeus luteumAnswer: D. Corpeus luteum Read Explanation: Corpeus luteum is formed by the degeneration of Graafian follicle after it releases an egg. This degenerating tissue releases progesterone to maintain the proper function and structure of endometrium.Read more in App