Placnta serves as a connecting link giving nutriest and waste sibtsnaces
and alos hormones for maternal changes in pregnancy
decidua is specialised endometrium of pregnancy
at first its the decidua thats helps with nutritio n
LAcunae appears y day 12 and is established by day 15. Its the ftre intervilis spaces.
chrorion frundosum is the villi in the embryonic pole.
laeve is the other part
blood flow at term is about 450 to 650 ml per min
if vascular remoddeling (invasing of trophoblast into the spiral arterioles in the decidua basalis) was defective it will lead to 1 uteroplacental insifficiency 2. preclampsia
If nitabchs ayer of fibrinoid degeneration is absent then can invade so much to casue placenta ccreta syndromes. morbid placentas.
Important questions:
2 sources placenta is formed by?
Stage at which it implants?
Timing of implantation?
Most common site of implantation?
what type of implantation is it?
when is implantation complete?
what stimulates decidua formation?
when is this decidual space obliterated?
when are the fetal vessel fucntioning?
When is the feto plcental circulation estalished?
part of planeta that get perfused by one single stem villi?
What is the functoning unit of placenta?
what is the interveillous spaces lined by?
what are the fetal macrophages made up of?
what type of placenta is the human placenta?
2 reasons why oxygen travels from maternal to fetal vessels and not vice versa?
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Placental abnormalaties
