Table 1.
Microanatomical characteristics of the OOM in chimpanzees and humans*
| Species |
||
|---|---|---|
| Measure | Human (+ SEM) | Chimpanzee (+ SEM) |
| Muscle area (%)† | 21.51 | 29.39 |
| Peripheralis area (%) | 31.61 | 46.65 |
| Marginalis area (%) | 18.17 | 27.07 |
| Peripheralis area : marginalis area ratio† | 1.438 | 1.866 |
| Fiber diameter: peripheralis segment† | 14.178 (0.664) | 45.116 (1.144) |
| Fiber diameter: marginalis segment† | 15.767 (0.665) | 42.341 (0.761) |
| Fiber diameter: peripheralis segment (oblique fibers)† | 13.843 (0.987) | 27.427 (0.949) |
| Fiber diameter: marginalis segment (oblique fibers)† | 17.480 (1.056) | 30.583 (1.154) |
| Total muscle thickness† | 3.270 (0.165) | 5.848 (0.110) |
| Total dermal thickness† | 2.672 (0.137) | 1.535 (0.081) |
| Connective tissue : muscle fiber area ratio† | 0.8449 (0.055) | 0.2649 (0.014) |
*Average fiber diameter (µm); total muscle fiber thickness and total dermal thickness (mm); percentages tested with Kolmogorov-Smirnov goodness-of-fit test. All other measurements tested with Student's t-test for independent measures.
†
Statistical significance (P < 0.05).