Placentation Flashcards
(7 cards)
1
Q
Who has a haemochorial placenta?
A
Human and rodents
2
Q
Who has a synepitheliochorial placenta?
A
Sheep and cows
3
Q
Who has a epitheliochorial placenta?
A
Pig/horse
4
Q
What is a caruncle?
A
Implantation site
5
Q
How is the placental blood flow established?
A
Invasive trophoblasts burrow into artery making them wider and less resistant. These are made into spiral arterioles.
6
Q
What is the role of the placenta?
A
- Protects foetus from mothers immune system.
- Placental Transfer
- Endocrine - HCG, progesterone and oestrogen.
7
Q
What factors can affect foetal growth?
A
Placental size and function, genetics, hormones and growth factors etc.
