“The early stages of the corpus luteum may be referred to as the “blood corpuscles”.
After the ovary has expelled the follicle, an irregular cystic cavity is formed in the ovulatory orifice containing a blood clot, called the ‘corpus luteum’, which is then regulated by the central hypothalamus and pituitary gland, and under the action of a series of reproductive endocrine hormones (including luteinizing hormone), the ‘corpus luteum’ rapidly In normal pregnancy, the corpus luteum persists and secretes progesterone to maintain the stable state of the uterus during the first three months of pregnancy; in the non-pregnant state, the corpus luteum gradually evolves into a “white body” within two weeks, which is slowly absorbed by the body and reverts to part of the ovarian tissue.”