1、The preganglionic fibers are shorter and synapse with postganglionic cells located outside the CNS.
前节纤维较短,与在中枢神经系统之外的后节细胞相突触。
2、In the preganglionic lesion group, the sympathetic skin response was markedly reduced, both in amplitude and in form.
前节神经损伤组的交感神经皮肤反应无论幅度和形态都明显减低。