The corpus luteum is a temporary yellow hormone-producing body that forms in the ovary from the follicle after ovulation. If pregnancy does not occur it lasts about 14 days; if it does, it keeps working until the placenta takes over.
| Location | Within the ovary at the site of the ruptured follicle |
|---|---|
| Parts |
|
| Nerve Supply | Ovarian plexus (T10-T11) |
| Blood Supply | Ovarian artery; Ovarian branch of the uterine artery |
| Venous drainage |
|
| Lymphatic drainage |
|
Secretes progesterone and oestrogen that prepare and maintain the endometrium for implantation.
Corpus luteum cysts are common and usually harmless, but can bleed or rupture causing sudden pelvic pain, sometimes mimicking ectopic pregnancy. Low progesterone from a weak corpus luteum has been linked to some early pregnancy loss.
Bleeding into the corpus luteum causing pelvic pain, sometimes with rupture.
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