Placenta Flashcards
tan-yellow cloud membranes can indicate what
infection
green-brown and opaque membranes can indicate what
meconium contact
what is a circummarginate membrane insertion
membranes insert before the disc edge/margin and do not form a ridge
what is the normal length range for an umbilical cord
50-70 cm long
what is an eccentric cord insertion
off centered
what is a furcate cord insertion
cord branches before it reaches the disc - absence of Wharton’s jelly
what is the normal amount of cord coiling
2 coils per 10 cm
T/F: all placentas receive a gross examination
False
define oligohydraminos
reduction in amount of amnion
where is the best location to take a viral culture of a placenta
villous areas from the mid portion of placenta
what are the two best structures to take from a placenta for cytogenetic tests
villi or cord
where should you take the rupture site measurement of a placenta
edge of disc over the shortest distance to the edge of membranes
what is circumvallate insertion of membranes
membranes insert before the disc margin/edge and have fibrin deposition that forms a palpable ridge
what is a marginate insertion
membranes insert at edge of disc
what is this normal finding?
yolk sac remnant
what is avulsion
when the amnion separates from the fetal surface
usually caused by meconium exposure or infection
what is a velamentous/membranous cord insertion
cord inserts into the peripheral membranes
what is the vasculature of the umbilical cord
two arteries, one vein
what is a false knot
not a true knot - bulge in cord or excess Wharton’s jelly
what is this condition of the placenta:
amnion nodosum
what is this condition of the placenta:
squamous metaplasia
what is this condition of the placenta:
vernix caseosa
