Fundamental tibbiyot kursi

Placenta and Amniotic Fluid

1. During the later stages of pregnancy, maternal blood is separated from fetal blood by
(A) syncytiotrophoblast only
(B) cytotrophoblast only
(C) syncytiotrophoblast and cytotrophoblast
(D) syncytiotrophoblast and fetal endothelium
(E) cytotrophoblast and fetal endothelium
2. The maternal and fetal components of the placenta are
(A) decidua basalis and secondary chorionic villi
(B) decidua capsularis and secondary chorionic villi
(C) decidua parietalis and tertiary chorionic villi
(D) decidua capsularis and villous chorion
(E) decidua basalis and villous chorion
3. The intervillous space of the placenta contains
(A) maternal blood
(B) fetal blood
(C) maternal and fetal blood
(D) amniotic fluid
(E) maternal blood and amniotic fluid
4. A young insulin-dependent diabetic woman in her first pregnancy is concerned that her daily injection of insulin will cause a congenital malformation in her baby. What should the physician tell her?
(A) Insulin is highly teratogenic; discontinue treatment
(B) Insulin does not cross the placental membrane
(C) Insulin crosses the placental membrane but is degraded rapidly
(D) Insulin will benefit her baby by increasing glucose metabolism
(E) Insulin crosses the placental membrane but is not teratogenic
5. What is a normal amount of amniotic fluid at term?
(A) 50 mL
(B) 500 mL
(C) 1000 mL
(D) 1500 mL
(E) 2000 mL
6. Which of the following does not pass through the primitive umbilical ring?
(A) Allantois
(B) Amnion
(C) Yolk sac
(D) Connecting stalk
(E) Space connecting the intraembryonic and extraembryonic coeloms
7. Which of the following best describes the placental components of dizygotic twins?
(A) One placenta, two amniotic sacs, one chorion
(B) One placenta, two amniotic sacs, two chorions
(C) Two placentas, two amniotic sacs, one chorion
(D) Two placentas, two amniotic sacs, two chorions
(E) One placenta, two amniotic sacs, two chorions
8. A 26-year-old pregnant woman experiences repeated episodes of bright red vaginal bleeding at week 28, week 32, and week 34 of pregnancy. The bleeding spontaneously subsided each time. Using ultrasound, the placenta is located in the lower right portion of the uterus over the internal os. What is the diagnosis?
(A) Hydatidiform mole
(B) Vasa previa
(C) Placenta previa
(D) Placental abruption
(E) Premature rupture of the amniochorionic membrane