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C101 - Chapter 9 Questions

C101 - Chapter 9 Questions - 1 List and Discuss Reasons For...

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1. List and Discuss Reasons For Becoming or Not Becoming Pregnant. There are many reasons for becoming pregnant. Pregnancies create a social structure to which one can belong, manifest a couple’s sense of love and emotional bonging, improves marriages, leave legacies, and carry on family names. There are also many reasons for not becoming pregnant as well. A pregnancy can infringe on career goals and may be an unnecessary or unwanted addition to intimate partnerships. Some may have doubts about their psychological or economic resources or may feel that they do not want to contribute more children to an already overpopulated world. First-time parents may feel overwhelmed by their responsibilities and at times parenting can be intense. Pregnancies require responsibility, hard work and intimacy. 2. Describe the Processes of Fertilization and Implantation All pregnancies begin with fertilization, which is the fusion of a father’s sperm cell with a mother’s ovum to form the first cell of their child, called the fertilized egg, or zygote. The sperm cells are released into the vagina by the penis and make their way through the uterus and into the fallopian tubes, the usual site of fertilization. Implantation occurs after fertilization, the zygote moves to the uterus, where it implants in the inner lining and develops as an embryo. During the first three days after fertilization, the cells of the embryo replicate at about daily intervals, and the embryo moves along the fallopian tube toward the uterus. By about the fourth day after fertilization, the embryo enters the uterus. On the sixth day after fertilization, the embryo attaches to the lining of the uterus and implant by eroding the uterine lining.
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