URR OBGYN EXAM QUESTIONS AND
ANSWERS
what hormone is responsible for the symptoms of early pregnancy
such as nausea and vomiting? -
correct answer ✅progesterone. it is responsible for premenstrual
symptoms, endometrial proliferation after ovulation, blocks
development of new follicles, stimulates uterine blood supply for
pregnancy, causes breasts to prepare for lactation but inhibits
lactation during pregnancy, and causes the formation of cervical
mucus plugs in pregnancy
at what gestational age is the gestational sac, yolk sac, and heart
first visualized with TV ultrasound? -
correct answer ✅gestational sac at 4 weeks, yolk sac at 5.5 weeks,
and heart at 6 weeks.
by which week should the amnion and chorion start to fuse? by
what week should they be be completely fused? at which week if
the chorion and amnion are not fused is there a higher chance of
fetal anomalies? -
correct answer ✅should start fusing at 12, should be fused by 14,
and if not fused at 16 weeks indicates a poor outcome
when does implantation of the fertilized egg occur? -
correct answer ✅day 20-23 of the pregnancy
,URR OBGYN EXAM QUESTIONS AND
ANSWERS
cardiac activity can first be identified in an embryo with a CRL of
___mm. -
correct answer ✅5
the embryo of a normal pregnancy will increase in size
approximately ____ mm per day. -
correct answer ✅1
on transvaginal ultrasound, the minimum mean sac diameter that
should always demonstrate a yolk sac in a normal IUP is ____. -
correct answer ✅8 mm. also, a mean sac diameter of 16 mm
should demonstrate a fetal pole in a normal IUP
the embryo and yolk sac can be seeen with TV ultrasound as early
as ____ weeks. -
correct answer ✅5.5
the number of yolk sacs determines the chorionicity or amnionicity
of the multifetal pregnancy? -
correct answer ✅amnionicity
,URR OBGYN EXAM QUESTIONS AND
ANSWERS
organogenesis of a fetus is normally complete by ____ weeks
gestation. -
correct answer ✅8
if fertilization occurs, what hormone will stop the regression of the
corpus luteal cyst so that it can produce progesterone to stimulate
the decidual reaction? -
correct answer ✅bhCG
if the zygote divides between days 4 and 8 of gestation, what type
of twins will result? -
correct answer ✅monochorionic-diamniotic
if division of the zygote is not complete by day 13, what happens? -
correct answer ✅conjoined twins
what structure in this image is the decidua capsularis? -
correct answer ✅it wraps only to the chorion frondosum
late in the 3rd trimester the tip of the spinal cord should be
identified at the level of ____. -
correct answer ✅L3
, URR OBGYN EXAM QUESTIONS AND
ANSWERS
the fetal testicles normally descend into the scrotum between ____
and ____ weeks gestation. -
correct answer ✅26 and 34
if you're at the level of the bladder, what section of the spine will
you see? -
correct answer ✅s-spine
the PTE and DFE will be seen at which weeks? -
correct answer ✅DFE at 33 weeks, PTE at 25 weeks
fetal sex organs are not fully developed until how many weeks? -
correct answer ✅16
the fetal stomach should be routinely visualized by which week? -
correct answer ✅14
fetal kidneys begin producing amniotic fluid around ____ weeks
and completely take over fluid production by _____ weeks. -
correct answer ✅12, 16
ANSWERS
what hormone is responsible for the symptoms of early pregnancy
such as nausea and vomiting? -
correct answer ✅progesterone. it is responsible for premenstrual
symptoms, endometrial proliferation after ovulation, blocks
development of new follicles, stimulates uterine blood supply for
pregnancy, causes breasts to prepare for lactation but inhibits
lactation during pregnancy, and causes the formation of cervical
mucus plugs in pregnancy
at what gestational age is the gestational sac, yolk sac, and heart
first visualized with TV ultrasound? -
correct answer ✅gestational sac at 4 weeks, yolk sac at 5.5 weeks,
and heart at 6 weeks.
by which week should the amnion and chorion start to fuse? by
what week should they be be completely fused? at which week if
the chorion and amnion are not fused is there a higher chance of
fetal anomalies? -
correct answer ✅should start fusing at 12, should be fused by 14,
and if not fused at 16 weeks indicates a poor outcome
when does implantation of the fertilized egg occur? -
correct answer ✅day 20-23 of the pregnancy
,URR OBGYN EXAM QUESTIONS AND
ANSWERS
cardiac activity can first be identified in an embryo with a CRL of
___mm. -
correct answer ✅5
the embryo of a normal pregnancy will increase in size
approximately ____ mm per day. -
correct answer ✅1
on transvaginal ultrasound, the minimum mean sac diameter that
should always demonstrate a yolk sac in a normal IUP is ____. -
correct answer ✅8 mm. also, a mean sac diameter of 16 mm
should demonstrate a fetal pole in a normal IUP
the embryo and yolk sac can be seeen with TV ultrasound as early
as ____ weeks. -
correct answer ✅5.5
the number of yolk sacs determines the chorionicity or amnionicity
of the multifetal pregnancy? -
correct answer ✅amnionicity
,URR OBGYN EXAM QUESTIONS AND
ANSWERS
organogenesis of a fetus is normally complete by ____ weeks
gestation. -
correct answer ✅8
if fertilization occurs, what hormone will stop the regression of the
corpus luteal cyst so that it can produce progesterone to stimulate
the decidual reaction? -
correct answer ✅bhCG
if the zygote divides between days 4 and 8 of gestation, what type
of twins will result? -
correct answer ✅monochorionic-diamniotic
if division of the zygote is not complete by day 13, what happens? -
correct answer ✅conjoined twins
what structure in this image is the decidua capsularis? -
correct answer ✅it wraps only to the chorion frondosum
late in the 3rd trimester the tip of the spinal cord should be
identified at the level of ____. -
correct answer ✅L3
, URR OBGYN EXAM QUESTIONS AND
ANSWERS
the fetal testicles normally descend into the scrotum between ____
and ____ weeks gestation. -
correct answer ✅26 and 34
if you're at the level of the bladder, what section of the spine will
you see? -
correct answer ✅s-spine
the PTE and DFE will be seen at which weeks? -
correct answer ✅DFE at 33 weeks, PTE at 25 weeks
fetal sex organs are not fully developed until how many weeks? -
correct answer ✅16
the fetal stomach should be routinely visualized by which week? -
correct answer ✅14
fetal kidneys begin producing amniotic fluid around ____ weeks
and completely take over fluid production by _____ weeks. -
correct answer ✅12, 16
