鸡腺胃迷走神经传入纤维在脑干的投射

Brainstem Projections of the Vagal Afferent Fibers of the Proventriculus in the Chicken

将 CB—HRP 注入鸡腺胃腹侧壁,通过跨神经节追踪证明,1.被标记的腺胃迷走传入神经元位于颈静脉神经节和结状节。2.腺胃的迷走神经初级传入纤维大部分投射于孤束核内侧亚核,部分投射于楔外侧核,少量纤维尚投射于孤束核的背内侧亚核、脉络带亚核、孤束连合核和三叉神经脊束。

Brainstem projections of the vagal afferent fibers of the proventriculus in the chicken were studied by the HRP transganglionic tracing technique. CB—HRP was injected into the ventral wall of proventriculus in the chicken. The results were as follows:1.Labeled vagal afferent neurons of the proven- triculus were located in the jugular ganglion and nodose ganglion.2.the prim- ary afferent fibers of vagal nerve of the proventriculus projected mostly to the medial subnucleus of the nucleus of the solitarytract(nTS).Part of the fibers projected to the external cuneate nucleus(nCE),and a small amount of them also to the dorsomedial,taenia choroidea,commissural subnucleus of nTS and the descending tract of the trigeminal nerve(TTD).