MILESTONES Flashcards
tissue differentiate into essential organs.
embryo most vulnerable to teratogens.
Embryonic Stage
head is large in proportions and represents about 1/3 of the entire structure. rudimentary heart appears as prominent bulge
end of 4 weeks
organogenesis is complete
end of 8 weeks
a sonogram shows gestational sac
end of 8 wks
arms and legs are like bud structures
end of 4 wks
meconium is present on upper intestine
end of 20 wks
sex can be determined by ultrasonography
end of 16 wks
fetus actively swallows amniotic fluid, demonstrating an intact but uncoordinated swallowing reflex; urine is present in amniotic fluid
end of 16 wks
babinski reflex present
end of 12 wks
sex is distinguishable on outward appearance
end of 12 wks
end of 8th wk to birth of baby
fetal stage
lung alveoli almost mature, surfactant can be demonstrated in amniotic fluid
end of 28 weeks
antibody production is possible; passive antibody transfer from mother to fetus begins
end of 20 wks
eyelids previously fused since the 12th week, now open: pupils react to light
end of 24 wks
iron stores, which provide iron for the first time during which neonate will ingest only breast milk after birth, are beginning to build
end of 32 wks
testes begin to descend
end of 28 wks
FHS is audible by stethoscope
end of 16 wks
meconium is present as far as the rectum
end of 24 wks
sole of foot has only one or two crisscross creases, composed with a full crisscross pattern evident at birth
end of 36 wks
