Flashcards in Chapter 55 The Placenta Deck (22):
Fetal membranes include?
chorion, amnion, yolk sac, and allantonis
The major functioning unit of the placenta is the _________
lobes of the placenta (approx. 15-20)
Forms the fetal part of the placenta
The nonvillious part of the chorion around the gestational sac.
The fetal structure of the placenta
The maternal surface of the placenta.
functions of the placenta
respiration, nutrition, excretion, protection, storage, hormonal production
Insertion of the umbilical cord at the margin of the placenta within 10mm of the edge.
umbilical cord that inserts on the membranes.
By ______ weeks the yolk sac has diminished to less than 5mm in diameter.
Placental implantation within the lower uterine segment.
the amnion develops at the _____menstrual day.
By week ___ gestation the amnion fuses within the chorion and can no longer be seen as two separate membranes.
The ________ are the functioning endocrine units of the placenta.
The umbilical cord develops during the first _____ of gestation.
The cord is surrounded by a mucoid connective tissue called __________.
The intestines herniate in the proximal umbilical cord at approx. _________
The Placenta can be identified as early as ________
The chorionic villi attaches superficially to the myometrium without muscular invasion
Further Extension of the chorionic villi into the myometrium.