What is the name of the endometrial cycle phase occurring from ovulation to just before menses?

The endometrial cycle phase that occurs from ovulation to just before menses is known as the secretory phase. During this phase, which typically lasts about 14 days, the endometrium undergoes significant changes in preparation for a potential pregnancy. After ovulation, the ruptured follicle transforms into the corpus luteum, which secretes hormones such as progesterone. This hormone plays a critical role in thickening the endometrial lining, making it more suitable for implantation of a fertilized egg.

If pregnancy does not occur, the corpus luteum eventually degenerates, leading to a decrease in hormone levels, which triggers the subsequent shedding of the endometrial lining during the menstrual phase. The secretory phase is characterized by glandular development and an increase in blood supply, creating an environment rich in nutrients to support early embryonic development, should fertilization take place. Understanding this phase is crucial for recognizing normal menstrual cycle physiology and identifying potential issues related to infertility or menstrual irregularities.