Multiple choice Menstruation involves loss of blood from the inner lining of the uterus ureter vagina ovary Reveal answer Fill a bubble to check yourself A Correct answer Explanation Menstruation is the shedding of the endometrium (inner lining) of the uterus when fertilization does not occur. The ureter carries urine, vagina is the birth canal, and ovary produces eggs but has no lining to shed.