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What is the first trimester risk sonographic examination also called? - (answer)The nuchal translucency
examination
What does the nuchal translucency examination measure? - (answer)1. Measurement of the nuchal
translucency
2. CRL (Crown-Rump Length)
3. Visualization of the fetal nasal bone
What does the standard obstetric sonography examination evaluate? - (answer)1. Gestational age by
fetal biometry
2. Fetal number
3. Placental position
4. Cardiac activity
5. AFI (Amniotic Fluid Index)
6. Fetal anatomic survey
Define gravidity - (answer)The number of pregnancies
Define parity - (answer)A numeric system that describes all possible pregnancies
What are the numbers representing in the parity numeric system? - (answer)1. Full term pregnancies
2. Premature births and stillborns
3. Miscarriages or termination
4. Living children
, ARDMS OBSTETRICS /ARDMS OB/GYN ACTUAL EXAM AND
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CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED
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What is the standard way to date a pregnancy? - (answer)LMP (Last Menstrual Period)
Pregnancy is divided into how many trimesters? - (answer)3
How long is the first trimester? - (answer)From beginning of the pregnancy to 13 weeks and 6 days.
How long is the second trimester? - (answer)From 14 weeks to 26 weeks and 6 days.
How long is the third trimester? - (answer)Begins at 27 weeks gestation until term.
What is Nagele's rule? - (answer)EDD (Estimated Due Date) = 3 months from LMP + 7 days
What fetal biometry is used in the estimate in fetal weight? - (answer)AC (Abdominal Circumference)
What is conceptual age also known as? - (answer)Embryonic age
What is conceptual age? - (answer)With conception as the first day of pregnancy
What is gestational age? - (answer)Considers the first day of the last menstrual period as the beginning
of gestation
What is gestational age also known as? - (answer)Menstrual age
, ARDMS OBSTETRICS /ARDMS OB/GYN ACTUAL EXAM AND
PRACTICE EXAM NEWEST 2025 COMPLETE 300 QUESTIONS AND
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What is the conceptus called during the implantation process? - (answer)A zygote
What is the zygote called from the implantation to 10 weeks? - (answer)An embryo
What is the embryo called after the 10 weeks? - (answer)A fetus
What is the cell division process of a zygote? - (answer)1.Rapid cellular division forms the 16-cell morula
2.Further division brings the morula to the blastocyst stage
3.The blastocyst contains trophoblastic calls.
4.The trophoblastic cells begin to secrete hCG
True or False
hCG levels plateau and decline while normal gestation continues. - (answer)True
Increased hCG levels can be used s a screening marker for Down syndrome during the first and second
trimester.
What does the anechoic center is the first trimester represent? - (answer)Chorionic cavity
What does the echogenic rim surrounding the chorionic cavity represent in the first trimester
ultrasound? - (answer)Desidual reaction
What is the first structure seen in the intragestational sac? - (answer)The secondary yolk sac
What are the functions of the secondary yolk sac? - (answer)1. Provision of nutrients to the embryo
, ARDMS OBSTETRICS /ARDMS OB/GYN ACTUAL EXAM AND
PRACTICE EXAM NEWEST 2025 COMPLETE 300 QUESTIONS AND
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2. Hematopoiesis (the formation of blood or of blood cells)
3. Development of the embryonic endoderm
What should a talk sac NOT exceed? - (answer)6mm
*Enlarged yolk sacs may have threatening outcomes
True or False
The number of yolk sacs are not consistent with the number of amnion membranes - (answer)False
It is very consistent with the number amnion membranes
When is the yolk sac reabsorbed and never seen again? - (answer)12 weeks
Define chorioamniotic fusion - (answer)Fusion of the membranes
When does chorioamniotic fusion occur? - (answer)14-15 weeks
What creates the yolk stalk? - (answer)Narrowing between the embryo and the yolk sac
The dorsal portion of the yolk sac is incorporated into the embryo and gives rise to what structures? -
(answer)-Foregut, midgut, and hindgut
-Entire gestational tract
-Liver
-Biliary tree
-Pancreas