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Flashcards in Placental Path Deck (25):
1

Main role of placenta is to exchange

gases between mom and baby

2

Placenta primarily arises from tissue called

trophoblasts

3

___ grows back over the implanted embryo

Endometrium

4

Initially during secondary implantation __ fill and block maternal arteries; eventually, they remodel the vessel to create a __ ___ system

trophoblasts; low pressure

5

50% of SABs are due to ____ defects, and the rest are physical issues with the __

genetic; mom (diabetes, endocrine, uterus issues)

6

In the fetus the umbilical __ has higher oxygen content than the __

vein; arteries

7

A safe length of umbilical cord length is

32 cm

8

3 layers of placental membrane

Amnion, chorion, decidua from mom

9

What is the functional unit of the placenta

vasculosynctial membrane

10

Most placentas have some functional

reserve

11

Two ways for placenta to get infected

ascending via vaginal canal or homogenous from the mom

12

Ascending infections tend to be ___ while homogenous membranes tend to be and the __ infections

bacterial; viral; torch

13

Homogenous infection is called ___ while ascending infection is called ___ or ___

villitis; chorioamnionitis; funisitis

14

Ascending infections are the most common cause of ___ while homogenous infections cause ___ ____

preterm labor; growth restriction

15

CMV usually only causes infection in ___ disease

primary

16

Retroplacental hemorrhage is bleeding between the placenta and the __ and it is most commonly associated with

uterus; hypertension

17

Hypertensive villous changes include __ placentas and increased __ or __

small; infarcts; hematoma

18

Hypertensive changes of maternal vessels

maintenance of smooth muscle tone, muscular hypertrophy

19

Triad of preeclampsia symptoms

hypertension, proteinuria, peripheral edema

20

Reason for preeclampsia

superficial penetration of trophoblasts into uterine wall

21

Preeclampsic arteries show ___ and __ on path

atherosclerosis and filling with foamy macrophages on path

22

Chorangioma is excess growth of fetal __

villi

23

Complete moles are entirely ___ derived

paternally

24

A hallmark of a complete mole is __ hyperplasia

trophoblast

25

Molar pregnancies are at risk of transforming into a

choriocarcinoma