Module 2: Preconception, Conception Flashcards
Zygote
Single formed cell after fusion of a sperm and ova
Embryo
15 days to 8 weeks gestation
Fetus
9 weeks gestation to birth
Fetal Stage
Reproductive Changes: Distingusihable after 9 weeks!
- 28 weeks testes begin to drop
Immunologic Fetal Stage
The only maternal immunoglobulin that can cross the placenta is IgG
Fetal Heartbeat
120-160 BPM
Amniotic Fluid
-Slightly Alkaline
-Fetus urinates into the fluid greatly increasing its volume
- By end of term 800-1200 mL
Polyhydramnios
Excess Fluid
Oligohydramnios
Less Fluid
Functions of Amniotic Fluid
- Acts as a cushion to protect embryo
- Filtration
Maternal Portion of Placenta
Red/ Flesh like
Fetal Portion of Placenta
Shiny
Placenta Functions
- Metabolism
- Nutrition
- Immune barrier
Breast Changes in Pregnancy
- Enlargement, darker, larger areola
- 20-24 weeks: Colostrum: Thick golden antibody rich substance can leak or be expressed
Braxton Hicks Contractions
Perceived after 20 weeks, irregular, painless, change with activity
- Abdomen gets hard