Embryology Flashcards
1
Q
when does spermatogenesis occur in males
A
after puberty in the seminerferous tubules
2
Q
what does the trophoblast form
A
the embryo
3
Q
for implantation to occur what must degenerate
A
the zona pellucida
4
Q
what happens in normal placentation
A
trophoblast invade the myometrium and spiral arteries of the uterus destroying the tunica muscularis media, which causes the spiral arteries to be dilated and unable to constrict which means high flow and low resistance
5
Q
what happens to the spiral arteries in pre-eclampsia
A
remodelling of the spiral arteries is incomplete causing high resistance and low flow
