After ovulation, the follicle which ruptures is finally converted into a blood filled cavity called corpus haemorrhagicum. The follicle cells proliferate and the clotted blood is replaced by yellow lipid rich luteal cells thereby forming the corpus luteum. The formation and maintenance of corpus luteum is under the influence of LH. The corpus luteum is a temporary endocrine gland which secretes progestrone and relaxin.
If fertilization occurs, corpus luteum persists, but if not, it degenerates and is replaced by scar tissue called corpus albicans.
Functions :
1. Corpus luteum secretes progestrone which prepares the uterus for implantation of foetus to the womb’s wall and also maintains the pregnancy till birth.
2. It also secretes relaxin on completion of gestation period so that delivery of foetus can occur easily.