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As the mother’s belly gets bigger, as her baby grows, how are the abdominal muscles able to stretch?
7 years, 7 months ago
As the uterus grows and the abdomen distends, the actual muscles of the abdominal wall increase in size. Since it’s over a long period of time, the body compensates very nicely.
Women who have had more than one or two pregnancies will sometimes get a separation of the muscles that run up and down the mother’s abdomen and the rectal muscles. It usually doesn’t happen in first-time pregnancies, but it can.
In general, though, these muscle tissues as well as the facia, which is a strong tissue underneath the skin and fat, are made to stretch very, very slowly and can accommodate the very large uterus.