Discussion
Periodic shedding of utrine lining discharge of blood and mucus from uterus refers to :
Answer: A
The periodic shedding of the uterine lining with discharge of blood and mucus is menstruation.
If an ovum is not fertilised, the levels of oestrogen and progesterone fall and the thickened endometrium breaks down and is shed through the vagina, usually over 3-5 days in a cycle of about 28 days.
Menarche is only the first menstruation, a single event at puberty. Ovulation is the release of an ovum from the ovary, around the middle of the cycle, and 'moment' is not a reproductive term.
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