Anatomy of the placenta Flashcards
(13 cards)
The term ‘decidua’ refers to what?
The endometrium of the uterus in a pregnant woman
The trophoblast differentiates into which 2 parts?
Syncytiotrophoblast
Cytotrophoblast
What are the 3 regions of the decidua?
Decidua basalis
Decidua capsularis
Decidua parietalis
Which cells form the primary chorionic villi?
Cytotrophoblast
Which cells form the secondary chorionic villi?
Extraembryonic mesoderm
The placenta should anchor into which layer of the uterus, which sits just deep to the functional endometrium?
Junctional endometrium
Where does the placenta invade in placenta accreta and percreta?
Myometrium
Where does the placenta attach in placenta previa?
Low in the uterus
Which 3 layers form the chorion?
Syncytiotrophoblast
Cytotrophoblast
Extraembryonic mesoderm
How many of each vessel is inside the umbilical vein?
2 arteries
1 vein
Describe the oxygen content of the vein in the umbilical cord.
High oxygen
Describe the oxygen content of the 2 arteries in the umbilical cord.
Low oxygen
What are the 3 foetal circulatory shunts?
Ductus venosus
Ductus arteriosus
Foramen ovale
