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不同的舌头底部收缩策略在哺乳动物吞过程中驱动球推进

Peishu Li¹, Kaleb C Sellers², Courtney P Orsbon³

¹Department of Biomedical Sciences, Ohio University Heritage College of Osteopathic Medicine, Athens, Ohio, USA.

Integrative and comparative biology

|April 16, 2025

概括

在哺乳动物中,舌头底部收缩 (TBR) 使用了多种生物力学策略. 虽然狗和使用舌运动,鱼依赖于内在的舌头肌肉来完成这一关键的吞动作.

科学领域:

比较生物力学比较
进化生物学是进化的生物学.
哺乳动物生理学哺乳动物生理学

背景情况:

舌头底部收缩 (TBR) 是一种广泛存在的哺乳动物吞行为.
TBR的进化起源和生物机械机制尚未得到充分理解.
全语言形态在哺乳动物之间有很大差异,这引发了关于其在TBR中的作用的问题.

研究的目的:

在哺乳动物中研究TBR机制的进化保存.
确定多语言形态如何影响TBR生物力学.
为了比较袋动物和胎盘动物的TBR机制.

主要方法:

使用双平面视频放射和XROMM (移动形态的X射线重建) 工作流.
收集高分辨率的3D动态数据来自,狗和.
在吞过程中对状腺和舌头底部运动进行了比较分析.

主要成果:

狗和利用舌运动来驱动TBR,其功能就像液压一样.
鱼使用内在的语言肌肉启动TBR,独立于状腺运动.
在有袋动物 () 和胎盘动物 (狗,) 之间,TBR机制显著不同.

结论:

多种生物机械机制促进了哺乳动物之间保存的TBR行为.
在TBR机制中的功能多样性是脱的从hyolingual形态多样性.
这种脱可能允许各种全语言形式的演化,而不会影响吞效率.

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