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首页> 外文期刊>Acta biomaterialia >The multiscale hierarchical structure of Heloderma suspectum osteoderms and their mechanical properties
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The multiscale hierarchical structure of Heloderma suspectum osteoderms and their mechanical properties

机译：Heloderma骨质骨膜骨质骨膜的多尺度层次结构及其机械性能

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Osteoderms are hard tissues embedded in the dermis of vertebrates and have been suggested to be formed from several different mineralized regions. However, their nano architecture and micro mechanical properties had not been fully characterized. Here, using electron microscopy, mu-CT, atomic force microscopy and finite element simulation, an in-depth characterization of osteoderms from the lizard Heloderma suspectum, is presented. Results show that osteoderms are made of three different mineralized regions: a dense apex, a fibre-enforced region comprising the majority of the osteoderm, and a bone-like region surrounding the vasculature. The dense apex is stiff, the fibre-enforced region is flexible and the mechanical properties of the bone-like region fall somewhere between the other two regions. Our finite element analyses suggest that when combined into the osteoderm structure, the distinct tissue regions are able to shield the body of the animal by bearing the external forces. These findings reveal the structure-function relationship of the Heloderma suspectum osteoderm in unprecedented detail.
机译：骨质胚胎是嵌入在脊椎动物的真皮中的硬组织，并已建议由几种不同的矿化区域形成。然而，它们的纳米架构和微型机械性能没有完全表征。这里，使用电子显微镜，MU-CT，原子力显微镜和有限元模拟，提出了来自蜥蜴直升机探测器的骨质胚层的深入表征。结果表明，成骨胚胎由三种不同的矿化区制成：致密的顶点，一种纤维强制强制区域，包括大多数骨胚乳，以及围绕脉管系统的骨状区域。致密的顶点是僵硬的，纤维强制区域是柔性的，并且骨状区域的机械性质落在其他两个区域之间的某个地方。我们的有限元分析表明，当组合成骨膜结构时，不同的组织区域能够通过承载外力来保护动物的主体。这些发现揭示了HeLoderma棘眼骨质胚乳在前所未有的细节中的结构功能关系。

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