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9 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Prenatal Development and Birth
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• Once every 28 days in the middle of the menstrual cycle an unfertilized egg will move from your ovary through the fallopian tube and into the uterus.
• When fertilization occurs, it will be about 10-14 days before it implants in your uterine wall |
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Sperm
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• Males produce about 300 million sperm a day
• Sperm can live up 6 days in a females body |
• The time you’re most likely to get pregnant is the day of ovulation (the day when the unfertilized egg breaks free of the ovary and travels to the uterus) or the two days before
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The Germinal Period
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First two weeks after conception
Implantation Zygote attaches to the uterine wall 10-14 days after conception |
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The Embryonic Period
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o 2-8 weeks after conception
o Foundation for organs laid o Life support systems develop |
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Amnion
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• Sack with clear fluid where embryo float
• What are the functions of the sack? o Protection (cushions the baby & temperature regulation) |
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Umbilical cord
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• Two arteries and one vein
• Connects the baby to the placenta • Removes waste and takes in nutrients |
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Placenta
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• Disk shaped group of tissues where small blood vessels from mom and baby intertwine
• Oxygen, food to baby, waste away from baby |
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Fetal Period
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o 2-9 months after conception
o Differentiation of organs o Rapid cell growth; growth in size and weight (and will continue to grow quickly until the age of 2) |
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Teratogens
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o Anything that causes a birth defect
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o Four factors influence effects of Teratogens
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