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相关概念视频

Anatomy of the Ear01:16

Anatomy of the Ear

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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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The Cochlea01:13

The Cochlea

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The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
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相关实验视频

Updated: Sep 8, 2025

In Vivo Morphometric Analysis of Human Cranial Nerves Using Magnetic Resonance Imaging in Meni&#232;re's Disease Ears and Normal Hearing Ears
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In Vivo Morphometric Analysis of Human Cranial Nerves Using Magnetic Resonance Imaging in Menière's Disease Ears and Normal Hearing Ears

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使用MRI对人类和羊的内耳体积进行比较.

Fabrice Micaletti1,2, Victoire Simier3, Damien Fouan4

  • 1ENT Department, University Hospital Center of Tours, 2 Boulevard Tonnellé, 37044, Tours, France. fabrice.micaletti@etu.univ-tours.fr.

Journal of the Association for Research in Otolaryngology : JARO
|July 18, 2025
PubMed
概括

羊的内耳尺寸与人类相对相似,使它们成为听觉研究的有希望的动物模型. 这项研究使用MRI来比较人类和绵羊的内耳结构,用于临床前研究.

关键词:
人类 人类 人类 人类 人类内耳是指内耳的内部部分.大型动物大型动物这就是为什么MRI是MRI.绵羊是一种羊.

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A Protocol for Decellularizing Mouse Cochleae for Inner Ear Tissue Engineering
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相关实验视频

Last Updated: Sep 8, 2025

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科学领域:

  • 耳鼻喉科 耳鼻喉科 耳鼻喉科
  • 比较解剖学的比较解剖学
  • 生物医学工程 生物医学工程

背景情况:

  • 临床前研究通常需要大型动物模型,具有类似人体解剖学.
  • 确定合适的动物模型对于推进听觉功能研究至关重要.
  • 人体内耳的尺寸是开发新疗法和了解疾病的关键.

研究的目的:

  • 评估绵羊作为人类内耳研究的动物模型的适用性.
  • 为了比较人类和羊的内耳的解剖学尺寸.
  • 评估羊在临床前听觉研究中的潜力.

主要方法:

  • 磁共振成像 (MRI) 被用来扫描4个人和4只羊的内耳.
  • 测量了关键的解剖特征,包括耳尺寸和螺旋转.
  • 计算了绵羊和人类耳结构之间的尺寸比率.

主要成果:

  • 绵羊的耳大小大约是人类耳的大约三分之二.
  • 羊的内部听觉通道大小只有人类的三分之一.
  • 状中的螺旋旋转数在物种之间是相同的.

结论:

  • 羊的耳是内耳研究的一个有前途的模型,因为它具有比例的尺寸相似性.
  • 这种模型可以帮助开发病理状况和研究疾病机制.
  • 绵羊模型可能有助于改善涉及可植入假肢的治疗方法.