Samson M D, Reddy V K
Am J Vet Res. 1982 Oct;43(10):1833-6.
The extent and location of the sacral parasympathetic nucleus was studied in 6 dogs, using light microscopy. After interruption of the pelvic nerve, chromatolytic somata were observed in thionin-stained transverse serial sections (15 mum) of appropriate spinal cord segments. Maps of the sacral parasympathetic nucleus were made by plotting the chromatolytic somata in drawings of the transverse sections of the spinal cord. The sacral parasympathetic nucleus was observed in all 3 sacral segments of the spinal cord, and in 1 dog, it also extended into the spinal cord segment Ca1. The cranial end of the nucleus was contained in the caudal one-third of spinal segment S1. The location of the caudal end was variable: it was within the middle one-third of spinal cord segment S3 in 4 dogs, in the caudal one-third of spinal cord segment S3 in 1 dog, and in the cranial one-third of spinal cord segment Ca1 in 1 dog. The densest clusters of somata of this nucleus were in the middle and caudal one-third of spinal cord segment S2. The somata, for the most part, were in the intermediolateral gray column and in the lateral funiculus. A small number of isolated somata also were in the intermediomedial gray column.
利用光学显微镜对6只狗的骶副交感核的范围和位置进行了研究。在切断盆神经后，在适当脊髓节段的硫堇染色横断连续切片（15μm）中观察到染色质溶解的胞体。通过在脊髓横断切片图中绘制染色质溶解的胞体来绘制骶副交感核的图谱。在脊髓的所有3个骶节段中均观察到骶副交感核，在1只狗中，它还延伸至脊髓尾1节段。该核的头端位于脊髓S1节段的尾三分之一内。尾端的位置各不相同：4只狗中位于脊髓S3节段的中三分之一内，1只狗中位于脊髓S3节段的尾三分之一内，1只狗中位于脊髓尾1节段的头三分之一内。该核的胞体最密集的群集位于脊髓S2节段的中三分之一和尾三分之一处。胞体大部分位于中间外侧灰质柱和外侧索内。少数孤立的胞体也位于中间内侧灰质柱内。
