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Unformatted text preview: attacked by the mother's immune system. The Embryo Takes Shape What milestone event takes place about 2 weeks after conception? The cells start to organize themselves into an embryo (gastrulation). True or False: Cells "talk" to each other in the form of chemical messages. True. Messages in the Genes True or False: If an embryo has two X chromosomes it typically becomes a boy. False. At 8 weeks the embryo is called a Fetus. Feeding the Growing Fetus True or False: The heart is one of the first organs that actually work during the early weeks of pregnancy. True. True or False: The fetus begins to hear sound at about 5 months. False. Pretish Borde The Third Trimester What is the main job of the fetus in the last trimester? To grow. Why is human birth far more dangerous than that or other mammals? A human baby has to go through many contortions to make it through the narrow opening....
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This note was uploaded on 09/29/2010 for the course HLTH 1050 taught by Professor Elmore during the Spring '10 term at East Carolina University .
- Spring '10