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Classification of Skeletal Muscle Fibers01:48

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Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
Slow-Twitch Muscle Fibers
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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
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在人类舌头发育过程中检测肌肉纤维方向:使用扩散张力成像的分析.

Saho Suto1, Toru Kanahashi1, Sena Fujii1

  • 1Human Health Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan.

NMR in biomedicine
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概括
此摘要是机器生成的。

这项研究使用扩散张力成像 (DTI) 来分析胚胎舌头肌肉发育. 内在和外在的舌头肌肉在相似的时间线上分化,DTI显示出追踪这种发展的希望.

关键词:
扩散张力成像的成像方法胚胎发育过程中的胚胎.外在的舌头肌肉 舌头的外在肌肉内在的舌头肌肉 语言肌肉肌肉纤维的方向 肌肉纤维的方向

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科学领域:

  • 发育生物学 发展生物学
  • 神经科学是一个神经科学.
  • 人体解剖学 解剖学 解剖学

背景情况:

  • 语言肌肉,内在和外在,对于复杂的运动至关重要.
  • 以前的粗体和组织学研究在区分这些肌肉及其发育时间表方面存在局限性.
  • 准确的区分时间表对于理解先天性舌头异常至关重要.

研究的目的:

  • 使用扩散张力成像 (DTI) 分析胚胎舌头肌肉纤维的方向.
  • 建立对内在和外在舌头肌肉的区分时间表.
  • 评估DTI在胚胎肌肉发育研究中的能力和局限性.

主要方法:

  • 在29个人类胚胎和胎儿标本上利用扩散张力成像 (DTI) 和7特斯拉磁共振成像 (MRI).
  • 采用纤维曲谱法来追踪肌肉纤维的方向和分数异性价值.
  • 相关的DTI发现与序列组织学切口进行验证.

主要成果:

  • 在卡内基阶段 (CS) 19 左右,舌头肌肉开始分化为肌肉管,其中许多可以通过 CS23.23 识别.
  • 内在和外在肌肉表现出类似的分化时间表,从CS19.
  • DTI允许基于分数异构和纤维方向,在大多数外在和内在肌肉之间进行清晰的区分,尽管精确的量化是有限的.
  • 组织学证实了在CS19.19的特定肌肉识别 (垂直,横向,光体,光体).

结论:

  • 在胚胎早期发育过程中,内在和外在的舌头肌肉同时分化 (CS19).
  • 扩散张力成像 (DTI) 是评估胚胎舌头肌肉发育的宝贵工具,能够检测不成熟的肌肉组织.
  • DTI在精确量化方面存在局限性,但它提供了关于肌肉分化和方向的见解,在其他发展中组织中具有潜在的应用.