d. when the egg cell dies 8. What do you call the normal vaginal bleeding tha monthly cycle? a. menstruation b. OV c. pregnancy d. fer . There are 4 phases in menstrual cycle. In what pho place? a. Phase 1 b. Phase 2 c. Phase 3 0.Why is menstrual cycle important to reproduction a. because it prepares a woman's body for p b. because it provides hormones to keep boc c. because egg cells are being recycled mor d. because it is a sign that uterus and ovaries ​