【摘要】 本实验用HRP注射于大白鼠的一侧球海绵体肌和坐骨海绵体肌后,在脊髓腰骶段的不同平面可观察到支配该两肌的运动神经元胞体出现标记并具有一定的局部定位关系。支配球海绵体肌的运动神经元主要位于L₅～S₁的背内侧群,而支配坐骨海绵体肌的运动神经元主要位于背外侧群和腹侧群。本文认为大白鼠腰骶段前角背内侧群和背外侧群同腹外侧群细胞一样,同属于Onuf’s核的同源神经细胞。本文还观察了大白鼠腰骶段脊髓前柱细胞的配布。更多还原

【Abstract】 HRP was injected unilaterally into bulbocavernosus and ischiocavernosus of male rat. The labelled cells were found in the ipsilateral side of the spinal cord. On the various levels of the lumbo-sacral segments of the spinal cord, the labelled cells innervating the two musculus were observed with the topographical organization. The motoneurons innervating the bulbocavernous were mainly located in the dorso-medial（DM）group of L₅～S₁. The motoneurons innervating the ischiocavernosus were mainly located in the dorso-lataral （DL） and the ventral （V） group of L₆. The DM group as well as the DL and V group in the rat were considered to be homologues of the human Onuf’s neucleus.更多还原