Plz answer no.9 ,mensuration
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Answer:
mensturation is the periodic cyoic changes that occurs in human female after every 28-29 days
heavy pain occurs during frist 5 days of menstural cycle
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Step-by-step explanation:
the uterus prepares itself every month to receive fertilised egg. the linning of the uterus becomes thick and spongy, required to support the embroy. when fertilization had not taken place, this linning breaks and comes out through vagina as blood and mucus. this cycle takes around 28 days every month and called mensuration.
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