corpus albicans

Pictured here is a “corpus hemorrhagicum,” which is the structure that forms on the ovary immediately after ovulation, before the corpus luteum and corpus albicans. Corpus hemorrhagicum means “bloody body”- it is easy to see how this structure was named.

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Sorry for the hazy picture. Its almost poetic, because that is exactly how I feel. I have been a bit sick today - my stomach is red raw. So I sketched, hoping to absorb some information in the process. I have decided to start including little facts in my posts…

“After a follicle releases the ovum, the follicle is converted to the corpus luteum - a temporary endocrine structure. During ovulation, the corpus luteum secretes oestrogen and progesterone to promote decidualisation of the endometrium in preparation for the fertilised ovum. If fertilisation does not occur, the corpus luteum recedes to the corpus albicans. If fertilisation and subsequent implantation occur, the placenta secretes Human Chorionic Gonadotropin to maintain the corpus luteum. This ensure the endometrium remains secretory to supply nutrients to the embryo until the tertiary villi develop in the 3rd week and a blood supply is established.”

Embryology and reproduction has proven to be fascinating - intricate little steps in controlled sequences leading to the development of a new little human.

But, dear god, the anatomy exam is going to be difficult :(

Ovary - Corpus Luteum

Histology image shows the ovary in overview, the cortex and medulla of the ovary can be clearly seen.

Corpus luteum (yellow body) theca lutein cells and granulosa lutein cells. These cells work together in the production of ovarian hormones that support the initial pregnancy.

Corpus albicans (white body) lack of implantation and associated hCG will lead to this structure not producing hormones.

Atretic follicles are the degenerating follicles from various developmental stages that did not form the ovulating follicle and do not form the corpus luteum.