Fine structural study of the innervation of muscle spindles in the internal oblique muscle of the abdominal wall in the adult mouse
Fine structural study of the innervation of muscle spindles in the internal oblique muscle of the abdominal wall in the adult mouse
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DOI：
10.1093/jmicro/dfp058
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发表时间：
2010-06-01
期刊：
影响因子：
--
通讯作者：
Nishida, Naoya
中科院分区：
文献类型：
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作者：
Desaki, Junzo;Ezaki, Taichi;Nishida, Naoya
用电镜观察了小鼠腹壁内斜肌肌梭的神经支配。在赤道区，除了单个肌内纤维上的感觉神经支配外，还经常在核链纤维之间观察到感觉交叉终端。近赤道区至极区，核袋纤维受尾状和板状运动末梢支配，而核链纤维受感觉末梢支配，可能为次级感觉末梢。从这些发现可以清楚地看出，两种类型的肌内纤维的神经支配模式不同。
We examined by electron microscopy the innervation of muscle spindles in the internal oblique muscle of the mouse abdominal wall. In the equatorial region, in addition to the sensory innervation on individual intrafusal muscle fibers, sensory cross terminals were often observed between nuclear chain fibers. In the area from the juxtaequatorial region to the polar region, nuclear bag fibers were supplied by trail and plate-type motor endings, while nuclear chain fibers were innervated by sensory endings, being probably secondary sensory endings. From these findings, it is clear that the innervation patterns differ between two types of intrafusal muscle fibers.