39.4 Fertilization and Development <br />
Zygote<br />Fertilized Egg.<br />
Implantation<br />Process in which a blastocyst attaches itself to the wall of the uterus.<br />
Differentiation<br />Process in which cells become specialized in structure and function. <br />
Gastrulation<br />Process of cell migration by which a third layer of cells is formed within the cavity of a blastocyst.<b...
Neurulation<br />Development of the nervous system.<br />
Placenta<br />Organ in placental mammals through which nutrients, oxygen, carbon dioxide, and wastes are exchanged between...
Fetus<br />Name given to a human embryo after eight weeks of development. <br />
Key Concept<br />The process of a sperm joining an egg is called fertilization.<br />
Key Concept<br />The stages of early development include implantation, gastrulation, and neurulation.<br />
Key Concept<br />The placenta is the embryo’s organ of respiration, nourishment, and excretion. <br />
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Biology 39.4

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Biology 39.4

  1. 1. 39.4 Fertilization and Development <br />
  2. 2. Zygote<br />Fertilized Egg.<br />
  3. 3. Implantation<br />Process in which a blastocyst attaches itself to the wall of the uterus.<br />
  4. 4. Differentiation<br />Process in which cells become specialized in structure and function. <br />
  5. 5. Gastrulation<br />Process of cell migration by which a third layer of cells is formed within the cavity of a blastocyst.<br />
  6. 6. Neurulation<br />Development of the nervous system.<br />
  7. 7. Placenta<br />Organ in placental mammals through which nutrients, oxygen, carbon dioxide, and wastes are exchanged between embryo and mother.<br />
  8. 8. Fetus<br />Name given to a human embryo after eight weeks of development. <br />
  9. 9. Key Concept<br />The process of a sperm joining an egg is called fertilization.<br />
  10. 10. Key Concept<br />The stages of early development include implantation, gastrulation, and neurulation.<br />
  11. 11. Key Concept<br />The placenta is the embryo’s organ of respiration, nourishment, and excretion. <br />

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