ppt for class

1. Chapter 6
Conception
and Fetal Development
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2.  Cell division
 Mitosis
 Meiosis
 Gametogenesis
 Spermatogenesis
 Oogenesis
 Conception
 Ovum
 Sperm
Conception
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3. 3All Elsevier items and derived items © 2014, 2010, 2006, 2002, Mosby, Inc., an imprint of Elsevier Inc.

4. 4All Elsevier items and derived items © 2014, 2010, 2006, 2002, Mosby, Inc., an imprint of Elsevier Inc.

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6. 6All Elsevier items and derived items © 2014, 2010, 2006, 2002, Mosby, Inc., an imprint of Elsevier Inc.

7.  Fertilization
 Morula
 Blastocyst
 Implantation
 Chorionic villi
 Decidua basalis
Conception (Cont.)
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8. 8All Elsevier items and derived items © 2014, 2010, 2006, 2002, Mosby, Inc., an imprint of Elsevier Inc.

9.  Primary germ layers
 Ectoderm
 Mesoderm
 Endoderm
 Development of the embryo
 Membranes
 Chorion
 Amnion and amniotic cavity
Embryo and Fetus
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10.  Amniotic fluid
 Serves numerous functions
 Volume is important to fetal well-being
 Yolk sac
 Becomes primitive digestive system
 Umbilical cord
 Supplies the embryo with maternal nutrients and
oxygen
Embryo and Fetus (Cont.)
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12.  Placenta
 Structure
• Maternal-placental-embryonic circulation by day 17
 Function
• Endocrine gland
• Metabolic function and waste
• Nutrient storage
Embryo and Fetus (Cont.)
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17.  Fetal maturation
 Viability
• Capability of fetus to survive outside uterus
• Limitations based on central nervous system function and
oxygenation capability of lungs
 Fetal circulatory system
• FHR 110 to 160 beats/min
Embryo and Fetus (Cont.)
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19.  Fetal maturation
 Hematopoietic system
 Respiratory system
• Primary surfactants
 Gastrointestinal system
 Hepatic system
 Renal system
Embryo and Fetus (Cont.)
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21.  Fetal maturation
 Neurologic system
• Sensory awareness
 Endocrine system
 Reproductive system
 Musculoskeletal system
 Integumentary system
 Immunologic system
Embryo and Fetus (Cont.)
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22.  Multifetal pregnancy
 Twins
• Dizygotic twins
• Monozygotic twins
• Conjoined twins
 Other multifetal pregnancies
Embryo and Fetus (Cont.)
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26.  Teratogens
 Drugs
 Chemicals
 Infection
 Exposure to radiation
 Maternal conditions
 Maternal nutrition
 Malnutrition
Nongenetic Factors
Influencing Development
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27.  A woman is 8 months pregnant. She tells the nurse that
she knows her baby listens to her but her husband thinks
she is imagining things. The most appropriate response
by the nurse is:
 “Many women imagine what their baby is like.”
 “Babies in utero do respond to their mother’s voice.”
 “You’ll need to ask the doctor if the baby can hear yet.”
 “Thinking that your baby hears will help you bond with
the baby.”
Question
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