Skip to main content
. Author manuscript; available in PMC: 2017 Feb 1.
Published in final edited form as: Placenta. 2015 Dec 20;38:57–66. doi: 10.1016/j.placenta.2015.12.011

Figure 7.

Figure 7

Quantitative fiber architectural measurements: (A) Representative image of the microstructural changes that occur in the amnion layer of the FM under isotropic loading. NOI values increased with increased pressure. However these changes were not found to be statistically significant. Since the change in preferred direction was not significant, the increase in fiber alignment was likely due to the uncrimping of the collagen fibers. Most importantly, failure of the amnion layer was found to be catastrophic. Point defects did not appear in the tissue leading up to failure. (B) These results can also be graphically presented. The NOI increase with increased pressure, with the greatest change in NOI occurs under the first 5 mmHg. NOI continually increases with pressure up to 100 mmHg, with minimal change thereafter.