Fetal Development and Genetics
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| When is the PREembryonic stage? | Fertilization through the second week.
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| When is the embryonic stage? | The end of the second week through the 8th week.
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| When is the Fetal Stage? | End of the 8th week until birth.
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| What is Fertilization? | When an egg and sperm meet, they form a zygote.
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| When is sex determined? | At the time of fertilization.
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| What are the 3 embryonic layers? | Ectoderm, Mesoderm, Endoderm.
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| What is Ectoderm? | it forms the circulatory system, special senses, skin and glands.
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| What is Mesoderm? | it forms skeletal, urinary, circulatory, and reproductive organs.
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| What is Endoderm? | it forms respiratory/digestive systems, liver and pancreas.
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| What is Zona Pellucida? | it is a clear layer protein
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| What are the horomones produced by the placenta? | hCG, hPL, hCS, estrogen, relaxinin, progesterone.
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| What is the umbilical cord formed by? | amnion.
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| What does the umbilical cord contain? | 1 large vein and 2 small arteries.
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| What is Whartons Jelly? | It surrounds the vein and arteries in the umbilical cord to prevent compression.
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| If a babys' lungs aren't developed, they will give the mother a | Steroid shot called celestone.
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| What is ductus venosus? | It connects the umbilical vein to the inferior vena cava.
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| What is ductus arteriosus? | It connects the main pulmonary artery to the aorta.
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| What is Foramen Ovale? | Anatomic opening between the R/L atrium.
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| What is pharmacogenomics? | The study of genetic and genomic influences on pharmacodynamics and pharmacotherapeutics.
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| A genome is | a persons genetic blueprint and it determines genotype and phenotype.
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| A genotype is | Genes inherited by the parents
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| A phenotype is | observed outward characteristics.
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| A chromosome is | long, continuous strand of DNA carrying genetic information.
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| A Karyotype is | pictorial analysis of number, form, and size of chromosomes.
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| Karyotypes use what type of cells in amniotic fluid? | Fetal and WBC.
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