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Unformatted text preview: th week till birth 1. Period of the Ovum First two weeks o Cell division o Blastocyst o Implantation 2. Period of the Embryo End of the 2 nd week till the 8 th week o Endoderm digestive system. Lungs, internal organs form o Mesoderm muscular, skeletal, and circulatory system are formed o Ectoderm hair nails and teeth form o Most likely time period for miscarriage Pregnancy Support Structures- Occurs during the Period of Embryo o Amniotic sac o Placenta o Umbilical cord o 20-25% of pregnancies miscarry (spontaneous abortion)...
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This note was uploaded on 03/30/2008 for the course HD FS 129 taught by Professor Mcaninch,susan during the Spring '08 term at Pennsylvania State University, University Park.
- Spring '08