Placental Development Quiz

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Placenta anatomy quiz

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MaKenna Dalcour

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Placental Development Quiz


Froggy Jumps Placental Development QuizVersión en línea Placenta anatomy quiz por MaKenna Dalcour 1 1. The placenta is best described as which of the following? a D. A modified uterine gland b B. A temporary fetomaternal organ c A. A permanent maternal endocrine organ 2 2. Which pairing correctly identifies the fetal and maternal contributions to the placenta? a B. Fetal: trophoblast/extraembryonic mesoderm; Maternal: decidua basalis b A. Fetal: decidua basalis; Maternal: trophoblast c D. Fetal: spiral arteries; Maternal: chorionic villi 3 3. Which of the following is not listed as a placental function in the lecture? a D. Hematopoiesis b B. Nutrient and waste exchange c A. Gas exchange 4 4. The trophoblast primarily contributes to formation of which placental structure? a D. Myometrium b B. Chorionic villi c A. Decidual septa 5 5. Primary villi first appear around: a B. Day 10–12 b C. Day 13–15 c A. Day 7–9 6 6. Primary villi are composed of: a D. Fetal capillaries and mesoderm b B. Cytotrophoblast covered by syncytiotrophoblast c A. Syncytiotrophoblast only 7 7. Secondary villi differ from primary villi because they contain: a B. Extraembryonic mesoderm in the core b C. Fetal capillaries c A. Maternal blood spaces 8 8. Tertiary villi are defined by the presence of: a B. Decidual septa b A. Syncytiotrophoblast only c C. Fetal capillaries 9 9. Which villous stage first allows true maternal-fetal exchange through fetal circulation? a B. Secondary villi b C. Tertiary villi c A. Primary villi 10 10. Stem villi are best described as: a A. Terminal exchange villi floating freely in maternal blood b D. Maternal septa between placental lobules c B. Main supporting villi attached to the chorionic plate 11 11. Free (terminal) villi are important because they: a C. Extend into the intervillous space for exchange b A. Form the decidua basalis c B. Contain maternal arteries 12 12. Maternal blood is supplied to the placenta mainly by which vessels? a C. Spiral arteries b A. Umbilical arteries c B. Chorionic arteries 13 13. Functional fetoplacental circulation is established when villous capillaries connect with vessels in the: a B. Chorionic plate and umbilical cord b D. Decidua capsularis only c A. Decidua parietalis only 14 14. Cytotrophoblast invasion of spiral arteries produces which major vascular change? a A. Small-diameter, high-resistance vessels b D. Transformation into fetal veins c B. Large-diameter, low-resistance vessels 15 15. Free villi grow prominently during which time period? a C. Weeks 8–20 b A. Weeks 1–4 c B. Weeks 4–8 16 16. By the fourth month, the placental barrier is mainly reduced to which 2 layers? a A. Cytotrophoblast + decidual cells b B. Syncytiotrophoblast + fetal capillary endothelium c D. Cytotrophoblast + syncytiotrophoblast 17 17. The main significance of placental barrier thinning is: a C. Improved diffusion for exchange b B. Increased maternal immune attack c A. Prevention of implantation 18 18. Early in development, villi cover: a B. Only the abembryonic pole b A. Only the embryonic pole c C. The entire chorionic surface 19 19. The chorion frondosum develops from the: a A. Abembryonic pole where villi regress b D. Myometrium adjacent to the placenta c B. Embryonic pole where villi persist and expand 20 20. The chorion laeve is best described as the: a D. Placental septal region b A. Bushy chorion at the embryonic pole c B. Smooth chorion at the abembryonic pole 21 21. Which decidual region forms the maternal part of the placenta? a B. Decidua parietalis b A. Decidua capsularis c C. Decidua basalis 22 22. Which decidual region degenerates as the chorionic vesicle enlarges? a A. Decidua basalis b B. Decidua capsularis c D. Syncytiodecidua 23 23. The chorion laeve eventually fuses with the: a C. Cytotrophoblast shell b A. Decidua basalis c B. Decidua parietalis 24 24. Which combination actually forms the placenta? a B. Chorion frondosum + decidua basalis b D. Amnion + decidua basalis c A. Chorion laeve + decidua capsularis 25 25. Fusion of the amnion and chorion forms the: a A. Chorionic plate b C. Decidual septum c B. Amniochorionic membrane 26 26. The full-term placenta is typically: a D. Cylindrical and 30 cm long b B. Discoid and 15–25 cm wide c A. Spherical and 5 cm wide 27 27. The maternal surface of the full-term placenta contains about: a A. 2–4 lobules b B. 5–10 lobules c C. 15–20 lobules 28 28. The fetal surface of the placenta is covered by the: a B. Chorionic plate b D. Cytotrophoblastic shell c A. Decidua basalis 29 29. Which of the following is a rare abnormal umbilical cord attachment in which the cord inserts into the membranes rather than the placental disc? a C. Velamentous insertion b B. Eccentric insertion c A. Marginal insertion 30 30. At day 18, a villus has trophoblast externally and mesoderm in the core but no fetal vessels; this is a: a D. Free terminal villus b B. Secondary villus c A. Primary villus

Placental Development Quiz

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Placental Development QuizVersión en línea

por MaKenna Dalcour

1. The placenta is best described as which of the following?

2. Which pairing correctly identifies the fetal and maternal contributions to the placenta?

3. Which of the following is not listed as a placental function in the lecture?

4. The trophoblast primarily contributes to formation of which placental structure?

5. Primary villi first appear around:

6. Primary villi are composed of:

7. Secondary villi differ from primary villi because they contain:

8. Tertiary villi are defined by the presence of:

9. Which villous stage first allows true maternal-fetal exchange through fetal circulation?

10. Stem villi are best described as:

11. Free (terminal) villi are important because they:

12. Maternal blood is supplied to the placenta mainly by which vessels?

13. Functional fetoplacental circulation is established when villous capillaries connect with vessels in the:

14. Cytotrophoblast invasion of spiral arteries produces which major vascular change?

15. Free villi grow prominently during which time period?

16. By the fourth month, the placental barrier is mainly reduced to which 2 layers?

17. The main significance of placental barrier thinning is:

18. Early in development, villi cover:

19. The chorion frondosum develops from the:

20. The chorion laeve is best described as the:

21. Which decidual region forms the maternal part of the placenta?

22. Which decidual region degenerates as the chorionic vesicle enlarges?

23. The chorion laeve eventually fuses with the:

24. Which combination actually forms the placenta?

25. Fusion of the amnion and chorion forms the:

26. The full-term placenta is typically:

27. The maternal surface of the full-term placenta contains about:

28. The fetal surface of the placenta is covered by the:

29. Which of the following is a rare abnormal umbilical cord attachment in which the cord inserts into the membranes rather than the placental disc?

30. At day 18, a villus has trophoblast externally and mesoderm in the core but no fetal vessels; this is a: