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Menstruation/Fertilization/Fetal Development

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Across
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These are chemical messengers
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The release of an egg from the ovary into the fallopian tube is called...
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The name of the egg when it is fertilized by a sperm (starts with a "Z"
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During the 2nd and 3rd trimesters the baby is called this
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A virus that is deadly to both mother and baby (3 letters)
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The menstrual cycle lasts about this number of days.
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The absence of this is one of the first signs of pregnancy (two words)
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Illegal drugs taken during pregnancy run the risk of this (starts with an "M"
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How many days can sperm live inside the female's body
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About how many weeks after the first day of menstrual flow does ovulation occur?
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This is where fertilization takes place (Two Words)
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Substances enter and leave the body through this (2 words)
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This is where the exchange of materials between mother and fetus takes place (starts with a "P"
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Pregnancy is divided into three parts called...
Down
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Women who do this can damage the placenta and run the risk of having a premature baby
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When women get older and stop having menstrual cycles
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The union of the sperm and the egg
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Premature babies have trouble with these as they are the last two develop
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A pregnant women who drinks can cause their baby to be born with this (3 letters)
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The changes that happen in a female's uterus before, during and after ovulation is called..
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The menstrual flow is made up of some blood, the unfertilized egg and this linning the starts with an "E"
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The name of the balls of cells that implant into the endometrium is called....
Use the link to the textbook to answer the puzzle questions. Start on Page 508