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家兔三叉神经脊束核由颈段脊髓后角顶向吻侧延至三叉神经感觉主核。根据细胞构筑特点,此核可分为两部分,即三叉神经尾侧脊束核和三叉神经吻侧脊束核。三叉神经尾侧脊束核介于颈段脊髓后角顶与三叉神经吻侧脊束核之间。该核分为带状亚核、胶状质亚核和大细胞亚核。三个亚核的细胞形态各有特点,分界比较清楚。三叉神经吻侧脊束核介于三叉神经尾侧脊束核与感觉主核之间。该核分为α、β和γ三个亚核。各亚核间无明显分界。核之尾段细胞排列较密集,嘴段的较稀疏。三叉神经脊束核的神经元为圆形、椭圆形、多边形和梭形,其中多数属中小型。
Rabbit trigeminal nerve bundle nucleus from the cervical spinal cord posterior horn to the kiss side extension to the main trigeminal nerve sensory. According to the characteristics of cell construction, this nuclear can be divided into two parts, namely the trigeminal nerve caudal spinous bundle nucleus and trigeminal nerve bundle nucleus. Trigeminal rear caudal spinal bundle nucleus between the cervical spinal cord posterior horn and the trigeminal nerve between the lateral nucleus of the spinal cord. The nucleus is divided into banded sub-nuclei, jellyfish subunits and large-cell sub-nuclei. Three sub-nuclear cell morphology has its own characteristics, the boundaries more clearly. The trigeminal kyphostosis nucleus is located between the caudal spinal nucleus and the main sensory nucleus of the trigeminal nerve. The core is divided into α, β and γ three sub-nuclei. No sub-nuclear sub-nuclear boundaries. End of the nucleus cells arranged in a more dense, sparse mouth segment. Neurons in the trigeminal nucleus of the trigeminal nucleus are round, oval, polygonal and fusiform, most of which are small and medium sized.