The development and postnatal organization of motor nuclei in the rat thoracic spinal cord.
The development and postnatal organization of motor nuclei in the rat thoracic spinal cord.
复制标题
大鼠胸脊髓运动核的发育和出生后组织。
DOI：
10.1002/cne.902200104
复制
发表时间：
1983
期刊：
影响因子：
--
通讯作者：
Hollyday,M
中科院分区：
文献类型：
--
作者：
Smith,CL;Hollyday,M
通过外周辣根过氧化物酶（HRP）标记研究了产后大鼠胸肌运动核的地形组织。为了确定相同组织的各个方面在早期发育阶段是否明显，我们使用HRP标记了从妊娠第13天到出生的大鼠胎儿中为胸神经的两个主要分支提供轴突的神经元。这一发育时期包括周围神经和肌肉形成的阶段。结果表明，即使在肌肉神经支配之前，在腹角适当位置的运动神经元在每个初级分支中也有轴突。然而，在某些发育阶段的胎儿中，也有位于运动核外的神经元向周围神经发送轴突。
The topographic organization of the motor nuclei supplying individual thoracic muscles in postnatal rats was investigated by horseradish peroxi‐dase (HRP) labelling from the periphery. To determine whether aspects of the same organization are apparent at early developmental stages, we used HRP to label neurons contributing axons to the two primary rami of thoracic nerves in rat fetuses ranging in age from the 13th day of gestation to birth. This developmental period includes stages during which peripheral nerves and muscles are forming. The results show that motoneurons in the appropriate positions in the ventral horn have axons in each primary ramus even at stages prior to the innervation of muscle. However, in fetuses at certain developmental stages, there are also neurons located outside the motor nuclei which send axons into the peripheral nerves.