Deck 7: Placenta and Extraembryonic Membranes

Question 1

A pregnant woman is found to have oligohydramnios.What anomaly is the fetus likely to have?

A)Anencephaly
B)Hydatidiform mole
C)Renal agenesis
D)Phocomelia
E)None of the above

Answer 1

C

Question 2

Which of the following is(are)derived from embryonic cells?

A)Decidua basalis
B)Decidua capsularis
C)Decidua parietalis
D)All of the above
E)None of the above

Answer 2

B

Question 3

In the mature placenta,which fetal tissue directly interfaces with the maternal uterine connective tissue?

A)Cytotrophoblast
B)Syncytiotrophoblast
C)Extraembryonic mesoderm
D)Decidual cells
E)None of the above

Answer 3

A

Question 4

The formation of hydatidiform moles is related to a disturbance in ____________.

A)Parental imprinting
B)X-chromosome inactivation
C)Induction
D)Cell migration
E)Hox gene expression

Question 5

The chorion laeve is most closely associated with the _______________.

A)Decidua capsularis
B)Umbilical cord
C)Decidua parietalis
D)Placental villi
E)Yolk sac

Question 6

A hydatidiform mole is the result of abnormal _________________.

A)Paternal imprinting
B)X-chromosome inactivation
C)Regulative development
D)Maternal imprinting
E)Y-chromosome inactivation

Question 7

Hydatidiform mole can be attributed to abnormal _______________.

A)Imprinting
B)Induction
C)X-chromosome inactivation
D)Regulation
E)None of the above

Question 8

Which of the following associations is correct?

A)Hydatidiform mole - maternal imprinting
B)Secondary villus - blood vessels
C)Hydramnios - bilateral renal agenesis
D)Yolk sac - blood islands
E)Oligohydramnios - anencephaly

Question 9

Blood vessels associated with which structure enter the fetal component of the placenta?

A)Allantois
B)Decidua basalis
C)Amnion
D)Yolk sac
E)Decidua parietalis

Question 10

Decidual cells can be found in the _______________.

A)Cytotrophoblast
B)Syncytiotrophoblast
C)Mesoderm of the placental villus
D)Endometrium
E)Body stalk

Question 11

Which malformation can lead to polyhydramnios?

A)Meckel's diverticulum
B)Esophageal atresia
C)Persistent anal membrane
D)Omphalocele
E)Aganglionic megacolon

Question 12

Which of the following gives rise directly to the syncytiotrophoblast?

A)Decidual cells
B)Epiblast
C)Extraembryonic mesoderm
D)Cytotrophoblast
E)Hypoblast