Luteal Phase

**Definition:** The period in the MENSTRUAL CYCLE that follows OVULATION, characterized by the development of CORPUS LUTEUM, increase in PROGESTERONE production by the OVARY and secretion by the glandular epithelium of the ENDOMETRIUM. The luteal phase begins with ovulation and ends with the onset of MENSTRUATION.

**Tree numbers:** - G08.686.605.410

**Synonyms:** - Menstrual Cycle, Luteal Phase - Postovulatory Phase - Menstrual Secretory Phase - Menstrual Cycle, Secretory Phase