Chapter 55 The Placenta Flashcards Preview

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Flashcards in Chapter 55 The Placenta Deck (22):
1

Fetal membranes include?

chorion, amnion, yolk sac, and allantonis

2

The major functioning unit of the placenta is the _________

chorionic villus

3

lobes of the placenta (approx. 15-20)

cotyledons

4

Forms the fetal part of the placenta

chorion fondosum

5

The nonvillious part of the chorion around the gestational sac.

chorion laeve

6

The fetal structure of the placenta

chorionic plate

7

The maternal surface of the placenta.

basal plate

8

functions of the placenta

respiration, nutrition, excretion, protection, storage, hormonal production

9

Insertion of the umbilical cord at the margin of the placenta within 10mm of the edge.

battleore placenta

10

umbilical cord that inserts on the membranes.

velamertous placenta

11

By ______ weeks the yolk sac has diminished to less than 5mm in diameter.

9

12

Placental implantation within the lower uterine segment.

placenta previa

13

the amnion develops at the _____menstrual day.

28th

14

By week ___ gestation the amnion fuses within the chorion and can no longer be seen as two separate membranes.

16

15

The ________ are the functioning endocrine units of the placenta.

chorionic villi

16

The umbilical cord develops during the first _____ of gestation.

5 weeks

17

The cord is surrounded by a mucoid connective tissue called __________.

Warton's Jelly

18

The intestines herniate in the proximal umbilical cord at approx. _________

10-12 weeks

19

The Placenta can be identified as early as ________

8 weeks

20

The chorionic villi attaches superficially to the myometrium without muscular invasion

Placenta accreta

21

Further Extension of the chorionic villi into the myometrium.

Placenta increta

22

Penetration of the chorionic villi through the uterus. Most dangerous.

Placenta precreta