| 鸡桡神经和腺胃初级传入向楔外核和孤束核的投射 |
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| 引用本文： | 乔灵,陈建新,苏秀英.鸡桡神经和腺胃初级传入向楔外核和孤束核的投射[J].中国农业科学,2001,34(3):326-329. |
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| 作者姓名： | 乔灵 陈建新 苏秀英 |
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| 作者单位： | 内蒙古农业大学动物科学与医学学院, |
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| 基金项目： | 内蒙古自治区自然科学基金资助项目 |
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| 摘 要： | 用跨神经节技术追踪了鸡桡神经和腺胃初级传入向楔外核和孤束核的投射。将ＣＢ－ＨＲＰ分别注入鸡一侧桡神经和腺胃腹侧壁。结果表明，桡神经初级传入纤维向楔外核几乎全长都有投射，以闩前０．３２～０．７２ｍｍ靠近迷走神经髓内根丝腹侧的标记终末最为密集；在孤束内侧核内也有一定量的投射；腺胃初级传入纤维经迷走神经进入脑干，丰富地投射于孤束核。标记终末密集区位于闩前０．８０～１．６０ｍｍ范围的孤束内侧核，在楔外核也有较为丰富的投射，浓密的标记终末出现在闩前０．４０～０．８０ｍｍ范围的该核内。另外，桡神经和腺胃初级传入纤维在三叉神经脊束内也见有少量投射。
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| 关 键 词： | 鸡 桡神经 腺胃 初级传入 跨神经节追踪 |
| 文章编号： | 0578-1752(2001)03-0326-04 |
Projections of Radial Nerve and Proventriculus Primary Afferents onto the External Cuneate Nucleus and the Nucleus of the Solitary Tract in Chicken |
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| QIAO Ling,CHEN Jian-xin,SU Xiu-ying.Projections of Radial Nerve and Proventriculus Primary Afferents onto the External Cuneate Nucleus and the Nucleus of the Solitary Tract in Chicken[J].Scientia Agricultura Sinica,2001,34(3):326-329. |
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| Authors: | QIAO Ling CHEN Jian-xin SU Xiu-ying |
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| Abstract: | The primary afferent projections of the radial nerve and the proventriculus in the external cuneate nucleus (nCE) and the nucleus of the solitary tract (nTS) were studied in chicken by the transganglionic transport method. CB-HRP was separately injected into the radial nerve unilaterally and the ventral wall of the proventriculus. The results were as follows. 1. The primary afferent fibers of the radial nerve almost projected to the whole length of the nCE. The most dense portion of the labeled termicals was localized in the nucleus near the ventral part of the intramedullary vagal rootlets, approximately 0. 32-0. 72mm rostral to the obex. Some projections were also observed in the medial subnecleus of the nTS. 2. The primary afferent fibers of the proventriculus entered the brainstem via the vagal nerve, and projected richly to the nTS. The concentrated area of the terminals was localized in the medial subnucleus of the nTS in the range of 0. 80 and 1. 60mm rostral to the obex. Also there was a richer projection within the nCE. The dense labeled terminals were found in the nucleus, approximately 0. 40-0. 80mm rostral to the obex. Additionally, a small amount of the primary afferent fiber projections from the radial nerve and the proventriculus were also observed in the descending tract of the trigeminal nerve(TTD). |
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| Keywords: | Chicken Radial nerve Proventriculus Primary afferents Transganglionic transport |
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