The First Trimester Flashcards by Sonography Student

What structure connects the embryo to the yolk sac?
A. Vitelline duct
B. Yolk stalk
C. Amnion
D. Chorionic stalk

A. Vitelline duct

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What is the name of the dominant follicle prior to ovulation?
A. Graafian
B. Corpus luteum
C. Morula
D. Corpus albicans

A. Graafian

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Fertilization typically occurs within ____ after ovulation.
A. 40 hours
B. 12 hours
C. 24 hours
D. 56 hours

C. 24 hours

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The most common site of fertilization is within the:
A. Isthmus of the uterine tube
B. Uterine fundus
C. Cornu of the uterine tube
D. Ampulla of the uterine tube

D. Ampulla of the uterine tube

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With a normal pregnancy, the first structure noted within the
decidualized endometrium is the:
A. Yolk sac
B. Chorionic sac
C. Amniotic cavity
D. Embryo

B. Chorionic sac

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The structure created by the union of sperm and egg is the:
A. Blastocyst
B. Zygote
C. Morula
D. Ampulla

B. Zygote

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The trophoblastic cells produce:
A. Estrogen
B. Progesterone
C. Follicle-stimulating hormone
D. hCG

D. hCG

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Sonographically, a normal-appearing 7-week IUP is identified. Within
the adnexa, an ovarian cystic structure with a thick, hyperechoic rim is
also discovered. What does this ovarian mass most likely represent?
A. Theca lutein cyst
B. Corpus luteum cyst
C. Corpus albicans
D. Ectopic pregnancy

B. Corpus luteum cyst

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What is the stage of the conceptus that implants within the decidualized
endometrium?
A. Blastocyst
B. Morula
C. Zygote
D. Ovum

A. Blastocyst

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Another name for the chorionic sac is the:
A. Chorionic cavity
B. Extraembryonic coelom
C. Amniotic sac
D. Gestational sac

D. Gestational sac

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What is often used to medically treat an ectopic pregnancy?
A. Dilatation and curettage
B. Dilatation and evacuation
C. Open surgery
D. Methotrexate

D. Methotrexate

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What structure lies within the extraembryonic coelom?
A. Gestational sac
B. Embryo
C. Yolk sac
D. Amnion

C. Yolk sac

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What hormone, produced by the corpus luteum, maintains the thickened
endometrium?
A. Estrogen
B. Progesterone
C. hCG
D. Luteinizing hormone

B. Progesterone

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What is the most common form of GTD?
A. Complete molar pregnancy
B. Partial molar pregnancy
C. Invasive mole
D. Choriocarcinoma

A. Complete molar pregnancy

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In the first trimester, normal hCG levels will:
A. Double every 48 hours
B. Triple every 24 hours
C. Double every 24 hours
D. Double every 12 hours

A. Double every 48 hours

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Compared with a normal IUP, the ectopic pregnancy will have a:
A. High hCG
B. Low hCG
C. Markedly elevated hCG
D. High AFP

B. Low hCG

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Which of the following locations for an ectopic pregnancy would be least
likely?
A. Isthmus of the tube
B. Ampulla of the tube
C. Ovary
D. Interstitial of the tube

C. Ovary

The first sonographically identifiable sign of pregnancy is the:
A. Amnion
B. Yolk sac
C. Decidual reaction
D. Chorionic cavity

C. Decidual reaction

The first structure noted within the gestational sac is the:
A. Yolk sac
B. Embryo
C. Decidual reaction
D. Chorionic sac

A. Yolk sac

NT measures are typically obtained between:
A. 1 and 5 weeks
B. 5 and 8 weeks
C. 8 and 11 weeks
D. 11 and 14 weeks

D. 11 and 14 weeks

The normal gestational sac will grow:
A. 2 mm per day
B. 3 mm per day
C. 1 cm per day
D. 1 mm per day

D. 1 mm per day

During a first-trimester sonogram, you note a round, cystic structure
within the fetal head. This most likely represents the:
A. Prosencephalon
B. Mesencephalon
C. Rhombencephalon
D. Proencephalon

C. Rhombencephalon

The migration of the embryologic bowel into the base of the umbilical
cord at 9 weeks is referred to as:
A. Physiologic bowel herniation
B. Pseudo-omphalocele
C. Omphalocele
D. Gastroschisis

A. Physiologic bowel herniation

During a 12-week sonogram, bilateral echogenic structures are noted
within the lateral ventricles of the fetal cranium. These structures most
likely represent:
A. Cerebral tumors
B. Cerebral hemorrhage
C. Anencephalic remnants
D. Choroid plexus

D. Choroid plexus

The most common pelvic mass associated with pregnancy is the: A. Uterine leiomyoma B. Dermoid cyst C. Theca luteum cyst D. Corpus luteum cyst

D. Corpus luteum cyst

All of the following are associated with an abnormal NT except: A. Trisomy 21 B. Trisomy 16 C. Trisomy 18 D. Turner syndrome

B. Trisomy 16

What hormone maintains the corpus luteum during pregnancy? A. Estrogen B. Progesterone C. Follicle-stimulating hormone D. hCG

D. hCG

The most common cause of pelvic pain with pregnancy is: A. Ectopic pregnancy B. Heterotopic pregnancy C. Missed abortion D. Molar pregnancy

A. Ectopic pregnancy

The most common location of an ectopic pregnancy is the: A. Ovary B. Interstitial portion of the uterine tube C. Cornual portion of the uterine tube D. Ampullary portion of the uterine tube

D. Ampullary portion of the uterine tube

All of the following are contributing factors for an ectopic pregnancy except: A. Pelvic inflammatory disease B. Assisted reproductive therapy C. IUCD D. Advanced paternal age

D. Advanced paternal age

All of the following are clinical features of an ectopic pregnancy except: A. Pain B. Vaginal bleeding C. Shoulder pain D. Adnexal ring

D. Adnexal ring

In the early gestation, where is the secondary yolk sac located? A. Chorionic cavity B. Base of the umbilical cord C. Embryonic cranium D. Amniotic cavity

A. Chorionic cavity

All of the following are sonographic findings consistent with ectopic pregnancy except: A. Decidual thickening B. Complex free fluid within the pelvis C. Bilateral, multiloculated ovarian cysts D. Complex adnexal mass separate from the ipsilateral ovary

C. Bilateral, multiloculated ovarian cysts

All of the following are consistent with a complete hydatidiform mole except: A. Heterogeneous mass within the endometrium B. Bilateral theca lutein cysts C. Hyperemesis gravidarum D. Low hCG

D. Low hCG

A malignant form of GTD is: A. Choriocarcinoma B. Hydatidiform mole C. Anembryonic D. Hydropic villi

A. Choriocarcinoma

A sonographic examination was performed on a pregnancy patient who complained of vaginal bleeding. Sonographically, a crescent-shaped anechoic area is noted adjacent to the gestational sac. The gestational sac contained a 6-week single live IUP. What is the most likely diagnosis? A. Ectopic pregnancy B. Molar pregnancy C. Subchorionic hemorrhage D, Anembryonic gestation

C. Subchorionic hemorrhage

All of the following would be associated with a lower-than-normal hCG level except: A. Ectopic pregnancy B. Molar pregnancy C. Blighted ovum D. Spontaneous abortion

B. Molar pregnancy

All of the following are clinical findings consistent with a complete molar pregnancy except: A. Vaginal bleeding B. Hypertension C. Uterine enlargement D. Small for dates

D. Small for dates

Which of the following is the most likely metastatic location for GTD? A. Rectum B. Pancreas C. Spleen D. Lungs

D. Lungs

All of the following may be sonographic findings in the presence of an ectopic pregnancy except: A. Pseudogestational sac B. Corpus luteum cyst C. Adnexal ring D. Low beta-hCG

D. Low beta-hCG