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WorksheetsPlacenta VO/Notes
Total questions: 46
Worksheet time: 31mins
What is the shape of the placenta?
(a)
What is the weight of the placenta?
200-300 grams
300-400 grams
400-500 grams
500-600 grams
What is the major functional unit of the placenta?
(a)
The placenta consists of the (a) plate on the fetal side
The placenta consists of the (a) plate on the maternal side
The placenta may be identified by how many weeks gestation?
6-8 weeks
8-10 weeks
10-12 weeks
12-14 weeks
The umbilical cord inserts (a) into the placenta
What is the thickness of the placenta after 23 weeks gestation?
2-3cm
3-5cm
5-7cm
3-4cm
What thickness measurement of the placenta is considered abnormal?
>1cm
>3cm
>4cm
>2cm
What are the four different positions of the placenta?
fundal
medial
lateral
anterior
posterior
What are some of the functions of the placenta? (Select all that apply).
discretion
protection
storage
hormone production
excretion
Oxygenated blood enters the fetus via what?
umbilical vein
umbilical artery
portal vein
placental vein
hepatic artery
Deoxygenated blood returns to the placenta via what?
umbilical vein
umbilical artery
portal vein
hepatic vein
hepatic artery
The sonographic appearance of the placenta is (a) , with a midlevel gray appearance
What is the sonographic appearance of the retroplacental complex?
isoechoic
hypoechoic
anechoic
hyperechoic
What is the sonographic appearance of the retroplacental complex in relation to the myometrium?
isoechoic
hypoechoic
anechoic
hyperechoic
What is the normal measurement of the placenta?
6-7mm
7-8mm
8-9mm
9-10mm
Which placenta grading is being described: small intraplacental calcifications randomly dispersed?
Grade 0
Grade 1
Grade 2
Grade 3
Select the types of placental grades
Grade 0
Grade 1
Grade 2
Grade 3
Grade 4
Which placenta grading is being described: calcification of the basilar plate?
Grade 0
Grade 1
Grade 2
Grade 3
Which placenta grading is being described: calcified indentations of the placenta extending from the chorionic plate to the basilar plate?
Grade 0
Grade 1
Grade 2
Grade 3
Which placenta grading is being described: smooth chorionic plate, homogeneous texture?
Grade 0
Grade 1
Grade 2
Grade 3
Approximately what percent of placentas will reach a grade 3 placenta grading by 40 weeks gestation?
5-10%
15-20%
25-30%
30-35%
Calcifications are delayed with what?
hypertension
IUGR
maternal diabetes
Rh sensitization
smoking
Calcifications are accelerated with what?
hypertension
IUGR
maternal diabetes
Rh sensitization
smoking
(a) lobe describes one or more small lobes in addition to the main placenta.
(a) placenta describes a ring around the uterus
Placenta ____________ is a covering over the entire placenta
accreta
increta
membrancea
percreta
What term describes a placenta that extends beyond the chorionic plate or the attachment of the placental membranes to the fetal surface of the placenta rather than to the underlying villous placental margin?
circumvallate placenta
annular placenta
placenta previa
placenta membrancea
(a) describes an enlarged placenta weighing more than 600 grams
Which of the following are ultrasound findings of placentomegaly?
appears abnormally thinned
measures >4cm thick in AP
measures 2-3cm thick in AP
appears abnormally thick
Select the four types of placenta previas.
low lying previa
partial previa
close previa
marginal previa
complete previa
93% of patients with placenta previa have what common symptom?
(a)
Placental (a) describes when the premature placental detachment of a normally implanted placenta before delivery
What is the mortality percentage rate of placental abruption?
30-60%
50-75%
20-60%
25-50%
Placental (a) describes bleeding from the placenta
Which bleeds are more likely to resolve?
1st trimester
2nd trimester
3rd trimester
post-delivery
What is the sonographic appearance of an acute hemorrhage?
isoechoic to the placenta
hypoechoic to the placenta
hyperechoic to the placenta
A morbidly adherent placenta is also known as which of the following?
placenta accreta
placenta increta
placenta percreta
placental hemorrhage
What term describes the penetration of the chorionic villi through the uterus; rarest form, most severe form?
placenta accreta
placenta increta
placenta percreta
What term describes the chorionic villi being attached to the myometrium without muscular invasion; mildest form, most common?
placenta accreta
placenta increta
placenta percreta
What term describes the further extension of the chorionic villi into the myometrium, not as common, and invades 2/3?
placenta accreta
placenta increta
placenta percreta
A/an (a) is a benign vascular malformation usually of no clinical significance found on the placenta and may represent a mass
Select all of the following that apply to chorioangiomas.
usually singular
usually multiple
usually near the cord insertion
complex
protrudes from maternal surface
Are teratomas common or rare?
common
rare
A (a) placenta describes two placentas of the same size
