肠神经系统(ENS)中有一类多极神经元,可能起到内在初级传入神经元(IPAN)的作用。胃肠道的外在性传入纤维包括迷走传入纤维和脊髓传入纤维,迷走和脊髓感觉神经元的末梢终止于肌肉、黏膜和ENS的神经节。
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部分初级传入神经元位于迷走神经结状节内。
Some primary afferent neurons were presented in the nodose ganglia.
结论小肠迷走神经初级传入神经元至少表达三种对酸反应的离子通道，分别是ASIC的两种不同亚型和TRPV1。
Conclusion Vagal primary afferent neurons of the small intestine express at least three types of acid-responsive ion channels, including TRPV1 and two subtypes of ASIC.
在正常生理条件下，初级感觉传入神经元上存在一些儿茶酚胺能神经纤维的支配，二者之间没有明显的功能联系。
Under normal conditions some catecholaminergic fibers innervate primary afferent neurons and there is no significant functional communication between sympathetic fibers and sensory neurons.
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