摘要
面部皮肤区在三叉神经脊束核内的躯体定位投射,在电生理方面,曾被广泛地研究过[1~3],在形态学方面,多是通过切断三叉神经根的方法,间接地论证了二者的局部定位关系[4,5]。近年来Grant等[6,7]发现切断三叉神经周围支后,分布在三叉神经主核及脊束核的中枢突终末也产生溃变.
The substantia gelatinosa of subnucleus caudalis of the trigeminal nerve of the rat shows an intense extralysosomal acid phosphatase activity which disappears after the removal of it’s skin of the facial regions.Different regions of the facial skin of 69 rats were excised and the projections of the cutaneous nerves were traced by studying the extralysosomal acid phosphatase activity with the modified Gomori’s methods.A somatotopical localization was found within the substantia gelationosa.It agreed with what has been found in earlier studies where other techniques have been used.The findings showed that the fibers of the cutaneous areas along the dorsoventral axis of the body were found in a reverse order in the receptive fields in the substantia gelatinosa.The vertex and fore-head lay in the ventral,while skin of the mandibular areas in the dorsal region,and the skin of the facial areas lay successively from ventral to dorsal in following order:vertex and forehead eye region,dorsal vibrissae,ventral vibrissae-upper lip and finally lower lip-mandibulare region,in the receptive fields of the substantia gelatinosa.The cutaneous facial regions were disproportionately represented in substantia gelatinosa,for example,the field receiving projections from the vibrissae areas or fields were as large as 4mm~2 in the most medial portion of the ventral vibrissae-upperlip which are disproportionately large while the fields receiving projections from the forehead and mandibular cutaneous regions were disproportionately small.The provides a possible explanation for the specific function of analgesia of the acupuncture point Renzhong.
作者
朱培纯
吴海霞
许红
Zhu Peichun;Wu Haixia;Xu Hong(Department of Anatomy,Beijing College of Traditional Chinese Medicine)
出处
《解剖学报》
CAS
1981年第2期155-161,228,共8页
Acta Anatomica Sinica
