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17 Cards in this Set
- Front
- Back
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What is the total number of chromosomes contained in a mature sperm or ovum? |
23 |
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What is the most common site for fertilization |
Outer third of the fallopian tube near the ovary |
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The embryo is termed a fetus at which stage of prenatal development? |
9 weeks |
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What vessel(s) carry blood to the fetus? |
One umbilical vein |
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Where is the usual location for implantation of the zygote? |
Upper section of the posterior uterine wall |
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What is the embryonic membrane that contains fingerlike projections on its surface, which attach to the uterine wall? |
Chorion |
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Which hormone is responsible for converting the endometrium into decidual cells for implantation? |
Progesterone |
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When infants heart begins to pump blood |
Week 3 |
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What organ does the ductus venosus shunt blood away from in fetal circulation? |
Liver |
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What complication can result from untreated respiratory distress in the newborn? |
Reopening of the foramen ovale |
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At what point in prenatal development do the lungs begin to produce surfactant? |
25 weeks |
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What is folic acid known to prevent? |
Neural tube defects |
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Of what is the normal umbilical cord comprised? |
2 arteries carrying blood away from the fetus and 1 vein carrying blood to the fetus |
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What are the germ layers? |
Ectoderm Endoderm Mesoderm |
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What are the functions of amniotic fluid? |
Maintaining an even temperature Acting as a cushion for the fetus |
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What facts will the nurse include when educating this patient? |
Dizygotic pregnancies tend to repeat in families. Dizygotic twins have separate chorions. |
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The vessels comprising the umbilical cord are cushioned and protected by a substance called |
Whartons jelly |
