Corpus Luteum

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Related to Corpus Luteum: progesterone, menstrual cycle, corpus luteum cyst

corpus luteum

[′kȯr·pəs ′lüd·ē·əm]
The yellow endocrine body formed in the ovary at the site of a ruptured Graafian follicle.

Corpus Luteum


in mammals and man, an endocrine gland that develops in the ovary at the site of the graafian follicle after rupture of the follicle wall and discharge of the ovum (ovulation); it consists of altered follicular (so-called lutein) cells. If pregnancy does not follow ovulation, the corpus luteum degenerates within one or two weeks (periodic, or menstrual, corpus luteum); if, however, the ovum is fertilized and pregnancy begins, the corpus luteum grows very rapidly (corpus luteum of pregnancy) and is retained throughout the greater part of pregnancy, secreting the hormone progesterone, which is necessary for the maintenance and development of the pregnancy.

The term “corpus luteum” is sometimes applied to the aggregate of follicular cells formed in the ovary at the site of discharge of the mature ovum in some invertebrates (insects) and in the majority of vertebrates (amphibians, reptiles, and birds).

References in periodicals archive ?
Accuracy of predicting stages of bovine estrous cycle by gross appearance of the corpus luteum.
Ectopic pregnancy versus corpus luteum cyst revisited: Best Doppler predictors.
Effects of bovine LH and human chorionic gonadotropin on the bovine corpus luteum in vivo.
The average yield of corpus luteum (CL) was found significantly highest in the 320 mg of FSH dose level and decreased thereafter.
Among these lesions are the dermoid cysts, corpus luteum cysts, theca-lutein cysts, endometriomas and hemorrhagic cysts, hydrosalpinx, and pedunculated leiomyomas.
The patient actually had an intrauterine pregnancy and the structure near the ovary had been a collapsed or hemorrhagic corpus luteum.
The corpus luteum provides a source of estrogen and progesterone for the maintenance of pregnancy.
These data support the view that the PSA gene is regulated by corpus luteum steroids during the menstrual cycle.
The empty follicle becomes a glandlike structure called the corpus luteum, which secretes large quantities of estrogens and progesterone.
Progesterone, a natural progestogen produced by the corpus luteum, has significant morphological effects on endometrium stimulated by estrogen and is essential to supporting pregnancy.
The ovarian histological structure of experimental groups consisted of greater number and larger size of corpus luteum but it was more prominent in HDE group than LDE group (Figure 1, upper row).