What is intervillous space?
Intervillous space is the space usually occupied by the maternal blood between the villi beyond the syncytiotrophoblast layer, with the chorionic plate and the decidual surfaces forming the other borders.
What is found within the intervillous space of the human placenta?
Evaluation of the Placenta The intervillous space is normally filled with maternal blood and a small amount of fibrin, with the villi evenly spaced; neighboring villi usually do not touch one another. When fibrin entirely encases a villus, the villous syncytiotrophoblast covering gradually degenerates.
Is the intervillous space maternal?
In the placenta, the intervillous space is the space between chorionic villi, and contains maternal blood.
What is the purpose of the intervillous space?
Exchange of oxygen and nutrients take place as the maternal blood flows around terminal villi in the intervillous space. The in-flowing maternal arterial blood pushes deoxygenated blood into the endometrial and then uterine veins back to the maternal circulation.
What is the function of Cytotrophoblast?
The primary function of an interstitial cytotrophoblast is to anchor the growing fetus to the maternal uterine tissue. These cells may invade the whole endometrium and the proximal third of the myometrium.
What makes up the intervillous space in the placenta?
In the placenta, the intervillous space is the space between chorionic villi, and contains maternal blood. The trophoblast, which is a collection of cells that invades the maternal endometrium to gain access to nutrition for the fetus, proliferates rapidly and forms a network of branching processes which cover the entire embryo and invade
Where does maternal blood enter the intervillous space?
The human placenta is a hemochorial, villous type where the maternal blood enters the intervillous space via the spiral arteries and flows directly around the terminal villi of the fetal circulation without any intervening maternal vessel wall.
How often does maternal blood perfuse the placental space?
The low-resistance of uteroplacental vessels and the gradient of blood pressure between uterine arteries and placental intervillous space allow the maternal blood to perfuse the intervillous space efficiently and effectively. The blood in the intervillous space is therefore completely exchanged two to three times per minute.
Which is part of the placenta contains maternal blood?
Anatomical terminology. In the placenta, the intervillous space is the space between chorionic villi, and contains maternal blood. The trophoblast, which is a collection of cells that invades the maternal endometrium to gain access to nutrition for the fetus, proliferates rapidly and forms a network of branching processes which cover