Intervillous space
(Redirected from Intervillous spaces)
Intervillous space is a term used in anatomy and embryology to describe the space within the placenta where maternal blood is found. This space is crucial for the exchange of nutrients and waste products between the mother and the fetus.
Etymology[edit | edit source]
The term "intervillous" is derived from the Latin words "inter", meaning between, and "villus", meaning shaggy hair. This refers to the hair-like projections of the placenta that extend into the intervillous space.
Anatomy[edit | edit source]
The intervillous space is located within the placenta, specifically between the chorionic villi. The chorionic villi are projections of the placenta that extend into the intervillous space. These villi are covered in trophoblast cells, which facilitate the exchange of nutrients and waste products between the mother and the fetus.
The intervillous space is filled with maternal blood, which is delivered to the space by the spiral arteries. The blood in the intervillous space is in direct contact with the trophoblast cells of the chorionic villi, allowing for the exchange of nutrients and waste products.
Function[edit | edit source]
The primary function of the intervillous space is to facilitate the exchange of nutrients and waste products between the mother and the fetus. This is accomplished through the diffusion of substances across the trophoblast cells of the chorionic villi.
In addition to nutrient and waste exchange, the intervillous space also plays a role in the immune tolerance of the fetus. The maternal blood in the intervillous space contains immune cells that help to protect the fetus from infection.
Related Terms[edit | edit source]
- Placenta: The organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply.
- Chorionic villi: Tiny, finger-like projections that come from the placenta and extend into the intervillous space.
- Trophoblast: Cells forming the outer layer of a blastocyst, which provide nutrients to the embryo and develop into a large part of the placenta.
- Spiral arteries: Arteries that supply blood to the intervillous space of the placenta.
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