The Maternal Component

The maternal component is composed of the decidua basalis.

Maternal blood vessels from the decidua conduct blood into the intervillous spaces of the placenta, where floating villi are present.

Placental barrier

Maternal blood is separated from fetal blood by cytotrophoblast, syncytiotrophoblast, a basement membrane, and fetal capillary endothelium.

Uterine artery

Figure 1-10-4. Placenta

Uterine artery

Figure 1-10-4. Placenta

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