secretory phase


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Related to secretory phase: menstrual phase, Proliferative phase

secretory phase

the phase of the menstrual cycle after the release of an ovum from a mature ovarian follicle. The corpus luteum, stimulated by luteinizing hormone (LH), develops from the ruptured follicle. It secretes progesterone, which stimulates the development of the glands and arteries of the endometrium, causing it to become thick and spongy. In a negative-feedback response to the increased level of progesterone in the blood, the secretion of LH from the pituitary decreases. In the absence of an embryo and its secretion of chorionic gonadotropin, the secretory phase ends. The corpus luteum involutes, progesterone levels fall, and menstruation occurs. Also called luteal phase, progestational phase. Compare menstrual phase, proliferative phase.

secretory phase

The stage of the menstrual cycle immediately following ovulation, during which the womb lining is at full thickness and its mucus glands are actively secreting.
References in periodicals archive ?
Endometrial biopsies were performed by clinician gynaecologists as an outpatient procedure using an endometrial sampler during the secretory phase of the menstrual cycle (Z-sampler, Bioteque America Inc.
Estrogen is the main hormone in the proliferative phase and progesterone in the secretory phase leading to transformation and stromal decidualization.
In the glandular cells of the normal endometrium, the level of p27 is exceedingly low during the proliferative phase, whereas it is markedly increased during the secretory phase.
We previously demonstrated with different techniques that the endometrial production of urocortin changes during the menstrual cycle and is highest in the secretory phase (5).
Majority of suicides occurred during the late secretory phase of menstrual cycle, 40 cases (41.
The pulmonary function test parameters of each subject were measured at menstrual phase (2nd day), proliferative phase (12th day), and secretory phase (22nd day) and compared statistically.
Upon immunohistochemical staining, intense immunoreactivity of apelin was observed in glandular cells of eutopic endometrial tissue of both groups during secretory phase (Figure 1).
During the menstrual cycle, estrogen influences the proliferation and maturation of the vaginal epithelial cell layers during the proliferative phase, whereas progesterone is associated with shedding of the superficial epithelial cell layers during the secretory phase (4, 5).
However, in this study, increase in the TLC during secretory phase is due to increase in all the subpopulations of leucocytes.
The bleeding in the proliferative phase may be due to anovulatory cycles and bleeding in the secretory phase is due to ovulatory dysfunctional uterine bleeding.
2] There are three phases of menstrual cycle namely; menstrual phase (MP), proliferative phase (PP), and the secretory phase (SP).
Sections from the endometrial curettings showed the features of disordered endometrium with few glands in proliferative phase, few in simple cystoglandular hyperplasia without atypia and yet a few in early secretory phase.