Gestational Landmarks Flashcards
0
Q
6 weeks
A
Tadpole appears (measured by US) Fetus is most susceptible to drugs between days 17-56
1
Q
4 weeks
A
Specialization of cells: outer layer (nervous syst, skin, and hair); inner layer (respiratory and digestive systems); middle layer (skeleton, ms, circulatory system, kidneys, sex organs)
2
Q
12 weeks
A
Organs present but not fully developed
Rate of miscarriage drops after this week
3
Q
20 weeks
A
Weighs 140 gm, nervous system starts to function, sex genitalia fully developed, fetal movement
4
Q
24 weeks
A
Weighs .5 kg, fetus responds to sounds, considered viable (23weeks)
5
Q
28 weeks
A
Weighs 1 kg, brain wave like newborn
6
Q
32 weeks
A
Fat layer forming, fetus will gain more than half of it’s weight between now and delivery
7
Q
36 weeks
A
Weighs 3kg (7Ibs), lungs nearly developed, vertex position
