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ARDMS OBSTETRICS EXAM 326 QUESTIONS WITH VERIFIED ANSWERS[A+ GRADES]
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ARDMS OBSTETRICS EXAM 326 QUESTIONS WITH VERIFIED ANSWERS[A+ GRADES]
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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
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
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
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
What are the three primary vesicles within the fetal brain? -
ANSWER>>>>>- Prosencephalon
- Mesencephalon
- Rhombencephalon
What does the rhombencephalon divide into? - ANSWER>>>>>-
Metencephalon (Cephalic portion)
- Myelencephalon (Caudal portion)
What appears in the 4-5 week of gestation? - ANSWER>>>>>The
gestational sac
What appears in the 5th week of gestation? - ANSWER>>>>>Yolk sac
What is seen in the 5.5-6 weeks of gestation? - ANSWER>>>>>Fetal
heartbeat
What is two structures are seen sonographically in the 7.5 weeks of
gestation? - ANSWER>>>>>-Spine
-Lower limbs
When are the upper limbs seen sonographically? - ANSWER>>>>>8
weeks
When are the the body movements and midline falx seen? -
ANSWER>>>>>9 weeks
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