Richardson - Placenta And Fetal Circulation

Question 1

Attachment of placental to lower uterine segment over (or less than 2cm away from) the internal cervical os.

Assoc’d w/ painless third trimester bleeding

Sometimes have to c section to deliver if too much bleeding

Answer 1

Placenta previa

Question 2

Implantation of fertilized ovum in a site other than the uterus. Most often ampulla of fallopian tube

Answer 2

Ectopic pregnancy

Question 3

Error In trophoblast invasion; adherence to but not deep invasion into the myometrium

Answer 3

Placenta accreta

Question 4

Error in trophoblast invasion. Penetration of the placenta into the myometrium

Answer 4

Placenta increta

Question 5

Error in trophoblast invasion; complete invasion through the myometrium

Answer 5

Placenta percreta

Question 6

What is the decidual reaction, which occurs in endometrial stroma after implantation.

Answer 6

Stromal cells become filled with glycogen and lipids which serves as the nutrients for the embryo until the placenta is established

Question 7

The syncytiotrophoblast invades the stroma of the uterus and produces ______

Answer 7

Chorionic gonadtropin