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This presentation covers the stages of fertilization and early embryonic development, including the formation of the zygote, morula, and blastocyst, and the role of the trophoblast and inner cell mass. After implantation, we explore the development of the embryo through gastrulation, leading to the formation of the placenta, which consists of maternal and fetal portions. Key structures such as the chorion, amniotic cavity, yolk sac, and allantois are discussed. We also look at fetal circulation, including the roles of the ductus arteriosus and ductus venosus in the developing fetus.
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ductus arteriosus Becomes ligamentum arteriosum
ductus venosus Becomes the ligamentum venosum
foramen ovale Becomes fossa ovalis