OB BOLD 5 Flashcards
brain arrises from what tissue
ectoderm
first cystic structure of the brain
rhombencephalon
diencephalon becomes
thalamus/hypothalamus
base of posterior horn where it meets the temporal horn is called
atrium
measure posterior horn at the level of
atrium (within)
AH measurement is between or within/
between
posterior horn normal measure
<10mm
lateral ventricle contains
choroid plexus
between thalamus is
interthalamic adhesions
lateral -> 3rd ventricle
foramen of monro or interventricular foramina
3rd to 4th
aqueduct of silvius/ cerebral aqueduct
lateral of 4th
LUSHKA
midline posterior of 4th
magendie
BPD< HC AND OFD are taken in what view
transthalamic
brachycephaly head
wider BPD, shorter OFD
dolichocephaly
long OFD and Shorter BPD
what meaured every cerebral view
cerebellum, cisterna magna, nuchal fold
cerebellum function
balance and posture
what connects left and right cerebelum
cerebral vermis
8 shape
cerebellum
cerebellum size at 20 weeks
20 mm
cisterna magna size
2-10mm
where to put calibers for nuchal fold
outer occipital bone to outer skin line
what is closely associated with corpus callosum
cavum septum pellucidum
most common cephalic presentation
vertex
1st form of measurement to estimate GA
mean sac diameter
where are caliberes placed for biparietal diameter measurement
outer edge of skull to inner edge of skull
occipitofrontal diameter is
anterior to posterior measurement
what is measured for femur
diaphysis and the near feild one, perpendicular to the beam
estimated fetal weight uses
AC, HC, BPD and FL
normal weight is between
10th and 90th percentile
fetal growth reaches a maximum of _____g per week
220g (1/2 pound)
Name a first trimester screening test that requires an accurate dating ultrasound.
nuchal translucency
Which fetal measurement is least influenced by fetal movement/posture?
femur length
