Figure 2.3. The process of spiral artery remodeling during pregnancy.

Figure 2.3

The process of spiral artery remodeling during pregnancy. In early pregnancy, two types of extravillous trophoblasts are found outside the villous, endovascular and interstitial trophoblasts. Endovascular trophoblasts invade and transform spiral arteries during pregnancy to create low-resistance blood flow that is characteristic of the placenta. Interstitial trophoblasts invade the decidua and surround spiral arteries. The figure is adapted from the 23rd Edition Williams Obstetrics, page 50 (Figure 3-12). Adapted from Williams Obstetrics 23e with permission of McGraw-Hill Professional.

From: Chapter 2, Placental Blood Circulation

Cover of Vascular Biology of the Placenta
Vascular Biology of the Placenta.
Wang Y, Zhao S.
San Rafael (CA): Morgan & Claypool Life Sciences; 2010.
Copyright © 2010 by Morgan & Claypool Life Sciences.

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