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Uterine Receptivity

Meaning

Uterine receptivity is the transient, specific physiological state of the endometrium during the menstrual cycle, known as the “window of implantation,” where the uterus is optimally prepared to accept a blastocyst for implantation. This critical phase is precisely timed and exquisitely regulated by the sequential action of ovarian steroid hormones, estrogen and progesterone. Achieving and maintaining this receptive state is the fundamental prerequisite for a successful pregnancy and is a major focus in reproductive endocrinology.