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that portion of the menstrual cycle extending from the time of formation of the corpus luteum to the onset of menses, usually 14 days long; short luteal phase, a period of 10 days or fewer between ovulation and the onset of menses, frequently associated with infertility.
the third phase of the human menstrual cycle, when the ovarian follicle that has recently discharged an ovum ruptures and transforms into the corpus luteum, which secretes progesterone. Progesterone acts on the endometrium to build up tissue with a supply of blood for nourishment of the potential embryo. If fertilization and conception do not take place, the estrogen level falls and the menstrual phase begins.
lu·te·al phase(lū'tē-ăl fāz)
That portion of the menstrual cycle extending from the time of formation of the corpus luteum to the onset of menses, usually 14 days in length; short luteal phase, a period of 10 days or fewer between ovulation and the onset of menses, frequently associated with infertility.
luteal phaseThe phase of the menstrual cycle following ovulation when the CORPUS LUTEUM is active in the ovary.
luteal phasethe phase of the OESTRUS CYCLE in which the CORPUS LUTEUM forms in the ovary. Secretion of PROGESTERONE takes place followed by the development of uterine glands and a fall off in OESTROGEN secretion.
pertaining to or having the properties of the corpus luteum or its active principle.
includes cystic corpora lutea, which are not evidence of ovarian malfunction, and luteinized cysts, which are usually anovulatory. The former can be identified by the presence of a palpable ovulation papilla. Animals with luteal cysts tend to be anestrus due to progesterone secreted by the cysts. See also luteal cyst.
the stage of the estrous cycle during which the effect of the corpus luteum dominates and the cow is anestrous because of the high levels of progesterone in the blood.