Menstrual phase of the uterine cycle

The menstrual phase of the uterine cycle occurs: While the endometrium is thickening From days 6-14 of a 28-day cycle When progesterone spikes When estrogen and progesterone are at their lowest levels Question 2 The follicular phase of the ovarian cycle: Lasts from day involves a surge of estrogen secretion Involves activity of the corpus luteum D) Involves inhibition of testosterone secretion