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Prenatal Development
17 cards·by shannonalexander
What forms when a sperm and an egg come together?
A zygote
How many stages of Prenatal Development are there?
3
Which stage of Prenatal Development occurs 2-8 weeks after conception?
Period of the Embryo
Which stage of Prenatal Development occurs from conception to 2 weeks?
Period of the Ovum
Which stage of Prenatal Development occurs from 8 weeks to birth?
Period of the Fetus
Spontaneous abortions occur the most during which stage?
Period of the Ovum
What is a placenta?
A soft mass that allows the transportation of nutrients from the mother to the embyro
Almost all major organs are formed during which stage?
Period of the Embryo
This is the organ that connects the placenta from the mother to the embryo
umbilical cord
What forms around the embryo for protection?
amnion
Which stage is considered to be the "least critical"?
Period of the Fetus
During which months of pregnancy is maternal health important?
All 9 of them!
How many weeks is a pregnancy considered full term?
38 weeks
When does an embryo's heart begin to beat?
Approximately 3 weeks after conception
By 20 weeks, the fetus has fully developed this sense
Hearing
Drug use by the mother has the most detrimental effects on the fetus during which stage?
Period of the Embryo
Approximately 10 weeks after conception, the fetus forms these
fingernails