Figure 7. The developed equations for human uterine wall tension show a developing human uterus growing throughout gestation.

Maximal tension occurs at the anterior and posterior of the uterus. The , , axes are in meters, and the color bar describes uterine wall tension. (A) gestational age of 19 weeks; (B) gestational age of 25 weeks; (C) gestational age of 30 weeks; (D) gestational age of 36 weeks.