Ullah M, Salman S S
Department of Anatomy, Histology and Embryology, College of Medicine, Al-Mustansiriyah University, Baghdad, Iraq.
J Anat. 1986 Apr;145:97-107.
The spinal nucleus of the accessory nerve (SNA) was localised in eight adult rabbits by a retrograde degeneration technique using thionine as a stain for the Nissl substance. The SNA was found to extend from the caudal one fifth of the medulla oblongata to the cranial one fourth of the sixth cervical segment. In the caudal part of the medulla oblongata, the SNA was located in the dorsal part of the detached ventral grey column. In the first cervical segment, the SNA was dorsolateral to the dorsomedial column and dorsal to the ventromedial column of the ventral grey column. In the cranial part of the second cervical segment, the SNA shifted laterally to the lateral margin of the ventral grey column. After this lateral shift, the SNA was located in the lateral part of the ventral grey column of the second, third and fourth cervical segments. In the fifth and cranial one fourth of the sixth cervical segments, the SNA was not a well defined column of cells but was represented by isolated cells scattered in the ventral part of the ventral grey column between the phrenic nucleus and the ventral border of the grey matter. The total number of chromatolysed cells found in the SNA of the right experimental side varied from 2723 to 3210.
采用硫堇对尼氏体进行染色的逆行变性技术，在8只成年家兔中定位了副神经脊髓核（SNA）。发现SNA从延髓尾侧五分之一延伸至第六颈段头侧四分之一。在延髓尾侧部分，SNA位于分离的腹侧灰质柱的背侧部分。在第一颈段，SNA位于背内侧柱的背外侧且在腹侧灰质柱腹内侧柱的背侧。在第二颈段头侧部分，SNA向外侧移位至腹侧灰质柱的外侧缘。此次外侧移位后，SNA位于第二、第三和第四颈段腹侧灰质柱的外侧部分。在第五颈段和第六颈段头侧四分之一，SNA不是一个界限分明的细胞柱，而是由散在于膈核与灰质腹侧边界之间腹侧灰质柱腹侧部分的单个细胞所代表。右侧实验侧SNA中发现的染色质溶解细胞总数在2723至3210之间。
