人类胎儿中复发性喉神经的发育和横截面形态
Maria Cecília Baratela1,2, William Paganini Mayer2,3, Josemberg da Silva Baptista1,2
1Department of Morphology, Federal University of Espirito Santo (UFES), Vitoria, Brazil.
Anatomy & cell biology
|July 16, 2024
概括
循环喉神经,对于语音箱功能至关重要,表现出不平等的发育. 左神经似乎在晚期胎儿中经历了更大的形态发展,可能为产后功能做好了准备.
科学领域:
- 人体解剖学 解剖学 解剖学
- 胚胎学 胚胎学
- 神经科学是一个神经科学.
背景情况:
- 复发性喉神经 (RLN) 刺激内在喉肌肉,这对于语音产生至关重要.
- 右侧和左侧RLN的不平等长度是由于胚胎发育过程中的差异性发展引起的,特别是在大动脉门方面.
- 这种长度差异促使研究对对称喉功能潜在的形态适应.
研究的目的:
- 研究人类胎儿复发性喉神经的发育和横截面形态学.
- 为了比较右侧和左侧RLN之间的上腺体和周围神经空间的形态.
- 探索与RLN长度不对称相关的潜在形态补偿.
主要方法:
- 使用了15个人类死胎胎 (3040周子宫内年龄).
- 对胎儿子内脏块进行了专门的解剖剖.
- 应用了形态定量技术来分析RLN在喉入口处的组织样本.
主要成果:
- 在右侧和左侧RLN之间没有发现上腺体和周围神经空间横截面形态的统计学上显著的个体内差异.
- 有证据表明,在怀孕30至40周之间,左侧RLN的上下和周神经空间发生了更大的发育变化.
- 这些发现表明,在胎儿生命晚期,左侧RLN的形态发展正在进行中.
结论:
- 胎儿RLN发育表现出不对称性,左神经表现出增强的形态发育.
- 这种发育轨迹可能会为左侧RLN在产后生活中增加直径和髓化做好准备.
- 这项研究提供了关于功能性喉内置不对称的发育基础的见解.
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