Healthy Pregnancy (1) Flashcards
(89 cards)
The union of sperm from male and egg from female
Conception
What is the length of a term pregnancy
40 weeks
What is the length of the preembryonic stage
From fertilization - 14 days
What is when the egg attaches to the uterine lining
Implantation
When is the yolk sac developed by
Day 8 or 9
When does the embryonic development happen in pregnancy
Day 15-8 weeks
On what day does cardiac structure begin to beat
23
On what day does the cardiac structure mature (develop chambers)
49
Between weeks — and —, arm and leg buds are developed and the brain is differentiated
4 and 5
When are fetuses most vulnerable from teratogens
Weeks 2-8
When does fetal development take place
9 weeks-birth
When are all organs and structures present
9 weeks
When are genitals differentiated, produces urine, reflex and brain development
12 weeks
When does greater muscle and skeletal development occur
14 weeks
When do nails and lanugo develop
20 weeks
What is lanugo
Thin hair (peach fuzz)
At what week is the baby covered in vernix, opens and closes eyes, has immature lungs that allow some gas exchange, and a maturing neuro system
25 weeks
In what trimester do lungs become more mature, systems continue to develop, and fat is stored?
Third
What is amniotic fluid
Baby’s urine
What keeps the fetus warm, protects umbilical cord and vessels, and keeps the fetus warm (thermoregulation)
Amniotic fluid
what is the structure of the umbilical cord?
AVA (artery vein artery), covered in warten’s jelly
what is a clear white structure that protects vessels from compression
umbilical cord
what organ grows on the uterine wall and has fetal/maternal blood (does not mix)
placenta
what is the purpose of the placenta
fetal blood removes waste and collects nutrients from the mother’s blood