Pregnancy Flashcards
After ovulation, the remaining cells in the follicle form the __________ which functions to:
corpus lutueum, or “yellow body”
produces progesterone to prevent sloughing of the endometrial wall.
The blastocysts (embryo) forms the ____________ (3).
trophectoderm, fetus, germ cells
After implantation at day ______, the trophectoderm forms the _______.
Day 20-24
Placenta
What is the zone pellucida?
protective barrier from viruses/bacteria
At 7 to 10 weeks, the __________ takes over from the corpus luteum and produces progesterone
placenta
Average length of pregnancy (in days)
280
Gravity
pregnancy (of any length)
Parity
pregnancy that has led to a birth of a minimum of 20 weeks
GTPAL
Gravity Term Preterm Abortion (spontaneous or therapeutic) Living
What hormone promotes breast growth and lactogenic properties?
chorionic somatomammotropin AKA human placental lactose (hPL)
What week does nausea usually subside by? What percentage of pregnant women experience nausea?
week 16
80%
uterine changes
uterus becomes globular in shape and softens and flexes over the cervis. cervix softens with increased vascularity and becomes a blueish color in primiparous women.
Blood pressure
decreases progressively until week 24-32 secondary to effect of progesterone, prostaglandins and nitric oxide.
when does implantation occur?
6-10 days after conception (which is 3-4 weeks gestation as there are 2 weeks follicular development)…
When does fetal development begin?
9 weeks - embryonic period ends and fetal period begins
When can the uterus be palpated above the pubic symphysis?
12 weeks
When is fetal movement first felt?
18-20 weeks