The development of the anterior post-otic somites in the rabbit
The development of the anterior post-otic somites in the rabbit
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DOI：
10.1002/jmor.1050570208
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发表时间：
1935-06-01
影响因子：
1.5
通讯作者：
Hunter, RM
中科院分区：
文献类型：
--
作者：
Hunter, RM
研究了从 5 体节阶段到 16 天的胚胎。该区域体节形成趋势的逐渐减弱似乎既可以通过初级体节的形成，也可以通过在第一个真正体节中发现的条件来表明。兔子的 3 个枕叶体节形成肌节。肌节的命运被追踪，直到它们的身份在最终肌肉块的形成中丢失。与椎骨类似的 2 个枕骨弓从骨节形成，并且可以晚至开始软骨化时被识别。该区域的组织受到明显的压缩，在较老的胚胎中，巩膜材料不仅相对较短，而且实际上较短，导致（1）舌下根的逼近和（2）两个枕弓的融合。软骨基底板在其尾端开始发育并向前分化，几乎没有原始分割的证据，除了后第一中心可能被称为节段。
Embryos from the 5-somite stage to 16 days were studied. A gradual fading out of the somite-forming tendency in this region seems to be indicated both by the formation of a rudimentary somite and by conditions found in the first true somites. In the rabbit 3 occipital somites form myotomes. The fate of the myotomes is traced until their identity is lost in the formation of definitive muscle masses. From the sclerotomes 2 occipital arches, comparable to those of vertebrae, are formed and can be identified as late as the time of beginning chondrifica-tion. There is a marked compression of the tissues in this region, the sclerotomal material being not only relatively but actually shorter in older embryos, resulting in (1) the approximation of the hypoglossal roots and (2) the fusion of the 2 occipital arches. The cartilaginous basal plate begins development at its caudal end and differentiates anteriorly with little evidence of a primitive segmentation except as this posterior 1st center might be called a segment.