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Lesson 2: Embryology and Fetal Development |
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2-13. PRINCIPLES OF FETAL IMMUNOLOGY a. During the third trimester, passive immunity to some diseases is provided by the mother. b. Diseases that the fetus receives temporary protection from include:
c. Passive immunity is short term and infants must begin immunization against the above diseases by the age of 2 months. a. Multi-fetal pregnancy is a pregnancy involving two or more fetuses. b. Twin fetuses may originate several ways (see figure 2-11).
c. Pregnancies involving more than two fetuses (that is, triplets, quadruplets) may occur by either situation.
In closing, a working knowledge of the development of the human baby from conception to birth is essential for you to function effectively as a practical nurse. The information covered in this lesson, along with Lesson 1, will help you in carrying out the nursing process in labor and delivery, and caring for the newborn infant.
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