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ARDMS OB/GYN ACTUAL EXAM AND PRACTICE
EXAM NEWEST 2025/2026 COMPLETE QUESTIONS
AND 100% CORRECT ANSWERS WITH RATIONALES
(VERIFIED AND GRADED A+|NEWEST VERSION!!
A circumvallate placenta can only be demonstrated during
what portion of pregnancy? - ANSWER-Mid second
trimester
Early in pregnancy, the entire surface of the gestational
sack is covered with the ViLLI, as the pregnancy
progresses, the VEILLi usually regress over most of the
surface of the sac, and that remains becomes the
placenta. If this regression does not occur, the placenta
may cover the entire surface of the sack, if it is patchy,
there may be two or more separate areas of placenta
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formation. And either case, this is called what? -
ANSWER-Placenta membranacea
Placenta membranacea - ANSWER-Fetal membranes
covered by chorionic villi due to failure of chorion
differentiation into the chorion laeve and chorion
frondosum
Succenturiate lobe - ANSWER-Accessory lobe of placenta
located away from the main placenta body. It is connected
to the main placenta via large blood vessels That course
through the membranes that accompany it
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Bipartite lobe - ANSWER-Is one that is divided into two
approximately equal size lives in is sometimes called but I
bilobed placenta
Annular placenta - ANSWER-A ring shaped placenta that
attaches circumferentially to the myometrium.
Between succentruriateblobes, bipartite placenta, and
annular placenta which types of placentas are seen on
ultrasound and which are not? - ANSWER-
Succenturiateblobes and bipartite placentas are seen on
ultrasound. And annular placenta is not seen on
ultrasound.
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Sonographic findings of succenturiateblobes and bipartite
placentas - ANSWER--two masses of placenta tissue that
appear unconnected. -Color Doppler imaging will show
robust flow in the blood vessels that vascularize the
accessory lobe. - when the lines are of equal size, the
primary lobe can be identified by the presence of the
umbilical cord insertion on its chorionic surface.
After 33 weeks, more that 50% of placentas contain some
degree of calcification. - ANSWER-Calicifation is a normal
part of placental aging ( fact card)
Where are calcifications usually found on the placenta? -
ANSWER-At the base of the placenta, in the septa, and in
the subchorionic and perivillous spaces.
ARDMS OB/GYN ACTUAL EXAM AND PRACTICE
EXAM NEWEST 2025/2026 COMPLETE QUESTIONS
AND 100% CORRECT ANSWERS WITH RATIONALES
(VERIFIED AND GRADED A+|NEWEST VERSION!!
A circumvallate placenta can only be demonstrated during
what portion of pregnancy? - ANSWER-Mid second
trimester
Early in pregnancy, the entire surface of the gestational
sack is covered with the ViLLI, as the pregnancy
progresses, the VEILLi usually regress over most of the
surface of the sac, and that remains becomes the
placenta. If this regression does not occur, the placenta
may cover the entire surface of the sack, if it is patchy,
there may be two or more separate areas of placenta
,2|Page
formation. And either case, this is called what? -
ANSWER-Placenta membranacea
Placenta membranacea - ANSWER-Fetal membranes
covered by chorionic villi due to failure of chorion
differentiation into the chorion laeve and chorion
frondosum
Succenturiate lobe - ANSWER-Accessory lobe of placenta
located away from the main placenta body. It is connected
to the main placenta via large blood vessels That course
through the membranes that accompany it
,3|Page
Bipartite lobe - ANSWER-Is one that is divided into two
approximately equal size lives in is sometimes called but I
bilobed placenta
Annular placenta - ANSWER-A ring shaped placenta that
attaches circumferentially to the myometrium.
Between succentruriateblobes, bipartite placenta, and
annular placenta which types of placentas are seen on
ultrasound and which are not? - ANSWER-
Succenturiateblobes and bipartite placentas are seen on
ultrasound. And annular placenta is not seen on
ultrasound.
, 4|Page
Sonographic findings of succenturiateblobes and bipartite
placentas - ANSWER--two masses of placenta tissue that
appear unconnected. -Color Doppler imaging will show
robust flow in the blood vessels that vascularize the
accessory lobe. - when the lines are of equal size, the
primary lobe can be identified by the presence of the
umbilical cord insertion on its chorionic surface.
After 33 weeks, more that 50% of placentas contain some
degree of calcification. - ANSWER-Calicifation is a normal
part of placental aging ( fact card)
Where are calcifications usually found on the placenta? -
ANSWER-At the base of the placenta, in the septa, and in
the subchorionic and perivillous spaces.
