Molavi Chapter 18 - Placenta

Question 1

Answer 1

Placental membranes

1. Amnion
2. Artificial space
3. Chorion
4. Underlying decidua

Question 2

Vessels and cells inside of the chorionic villi are. . .

Answer 2

. . . FETAL

Not maternal

Question 3

Answer 3

Immature villi (A) versus terminal villi (B)

Immature: Large and have an open, pale appearance. Lined by an outer syncytiotrophoblast layer and an inner cytotrophoblast layer.

Terminal: Small with more prominent capillaries. Syncytiotrophoblasts have pulled way from the gas-exchange surface into syncytial knots (arrow). Maternal blood and fibrin are visible in-between villi.