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Unformatted text preview: Heather Hopkins 1) Germinal- This is the first two weeks after conception. The sperm and egg cell bond. The fertilized egg, aka zygote, goes to the uterus; this can take up to a week to complete. This stage has Blastocyst which are a group of cells after about 1 week, Trophoblast are the outer layer of cells that later provides nutrition and support for the embryo and Implantation is the attachment of the zygote to the uterine wall; occurs 10 to 14 days after conception. Embryonic- occurs from 2 to 8 weeks after conception. Begins when blastocyst attaches to uterine wall. Mass of cells is now called an embryo. Three layers of cells: endoderm, mesoderm, and ectoderm. Amnion: a bag that contains a clear fluid (amniotic fluid) in which the embryo floats. Umbilical Cord: connects the baby to the placenta. Placenta: group of tissues containing mother and babys intertwined blood vessels. Organogenesis: process of organ formation during the first two months of prenatal development...
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This note was uploaded on 11/21/2011 for the course PSYC 2070 taught by Professor Erwin during the Fall '10 term at LSU.
- Fall '10