Popeâs Homily at Vespers on Eve of New Year âHoly Mother Church teaches us to end the year and also our days with an examination of conscience â¦ to be grateful and to ask for forgivenessâ December 31, 2014 ZENIT Staff Francis
Progesterone causes the endometrial glands to secrete, preparing the endometrium for blastocyst implantation. If the oocyte is fertilized, the corpus luteum enlarges to form a corpus luteum of pregnancy and increases hormone production. With pregnancy, chorionic gonadotropin, secreted by the trophoblast of the chorion, prevents degeneration of the corpus luteum.
These cells are less than half the size of granulosa lutein cells, and often stain darker, with cytoplasmic structures of steroid-syntesising cells. The Corpus Luteum is relatively large, during pregnancy (Corpus Luteum graviditatis), it can be one third to one half of the size of the ovary. Once the Corpus Luteum regresses, it forms the Corpus albicans.