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24 Cards in this Set
- Front
- Back
During development, the conceptus is called a(n) _______ from the fertilization through week 8, and a(n) _______ from week 9 through birth. |
Embryo; Fetus |
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________ is the process by which sperm become capable of penetrating the oocyte. |
Capacitation |
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How many days after ovulation does the conceptus implant on the uterine wall? |
6-7 days |
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Which of the following structures form the placenta? |
Chorionic villi and decidua basalis |
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Which of the following are the three components of somites? |
Dermatome, Myotome, Sclerotome |
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What is the major stimulus triggering parturition? |
All of the above. |
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Increased ________ stimulates the baby's first breath. |
Blood CO2 level |
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When a woman's "water breaks" just before delivery, it is the ________ that ruptures. |
Amnion |
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Which of the following is the first major event in organogenesis? |
Neurulation |
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Which of the following structures is enclosed by a tube of endoderm and develops into the primitive gut? |
Yolk sac |
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Which fetal cells digest uterine cells? |
Syncytiotrophoblasts |
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Breast-feeding provides several advantages to newborns. For example, ________. |
All of the above are benefits of breast-feeding. |
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The embryo implants in the uterus as a ________. |
Blastocyst |
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When, in the female, is meiosis II completed? |
At fertilization |
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After fertilization, a loose collection of cells forms in the uterine tube. This cluster of cells is called a ________. |
Morula |
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Capacitation refers to changes occurring in ________. |
Sperm before fertilization. |
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During late pregnancy and during the labor, the release of oxytocin is regulated by ________. |
Positive feedback |
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At the time of birth, the uterus has enlarged to the level of the ________. |
Xiphoid Process |
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In the developing fetus, all body systems are present by ________. |
8 weeks |
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The neural tube and neural crest cells develop from the ________. |
Ectoderm |
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Nutrients are carried from the placenta into the fetus by the _______.
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Umbilical vein
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Which extraembryonic membrane contributes to the formation of the placenta? |
Chorion |
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Which hormone is responsible for increasing milk production? |
Prolactin |
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The infant's head enters the true pelvis during this stage of labor. |
Engagement |