Coggeshall R E, Galbraith S L
J Comp Neurol. 1978 Sep 15;181(2):349-59. doi: 10.1002/cne.901810207.
The mammalian rami communicantes consist of preganglionic, postganglionic and sensory axons. The present study focusses on the number of sensory axons in the midthoracic rami communicantes in the cat. The conclusions are that the white rami contain approximately 250 myelinated and 200 unmyelinated sensory axons and the grey rami 4 to 5 myelinated and 20 to 25 unmyelinated sensory axons. A previous study determined the numbers of pre- and postganglionic fibers in these same rami. Thus the total number of axons in these rami are as follows: for the grey rami there are: (1) 3,000 to 5,000 unmyelinated postganglionic axons, (2) 25 myelinated postganglionic axons, (3) 20 to 25 unmyelinated sensory axons and; (4) 4 to 5 myelinated sensory axons; and for the white rami there are approximately: (1) 1,000 unmyelinated preganglionic axons, (2) 1,500 myelinated preganglionic axons, (3) 2,000 unmyelinated postganglionic axons, (4) 250 unmyelinated sensory axons and (5) 200 myelinated sensory axons. The implications of these findings are discussed.
哺乳动物的交通支由节前、节后和感觉轴突组成。本研究聚焦于猫胸段中部交通支中感觉轴突的数量。结论是，白交通支包含约250条有髓鞘和200条无髓鞘感觉轴突，而灰交通支有4至5条有髓鞘和20至25条无髓鞘感觉轴突。先前的一项研究确定了这些相同交通支中节前和节后纤维的数量。因此，这些交通支中轴突的总数如下：对于灰交通支有：（1）3000至5000条无髓鞘节后轴突，（2）25条有髓鞘节后轴突，（3）20至25条无髓鞘感觉轴突，以及（4）4至5条有髓鞘感觉轴突；对于白交通支大约有：（1）1000条无髓鞘节前轴突，（2）1500条有髓鞘节前轴突，（3）2000条无髓鞘节后轴突，（4）250条无髓鞘感觉轴突和（5）200条有髓鞘感觉轴突。本文讨论了这些发现的意义。
