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支配咽肌的运动神经元位于疑核,控制凝核的前运动神经元位于孤束核.孤束核中的前运动神经元在控制吞咽运动中起着重要的作用.但支配咽肌的前运动神经元位于孤束核的什么部位还不清楚.文内用假狂犬病毒研究了大鼠咽肌前运动神经元在孤束核中的定位.咽肌中注射假狂犬病毒后48小时,标记神经元仅位于疑核的半致密部,动物存活56到62小时,假狂犬病毒标记的神经元均位于孤束核的中介亚核、中间亚核及吻内侧亚核.因此,咽肌的运动受中枢环路控制,即咽的迷走神经传入止于孤束核的前运动神经元,然后再支配疑核中的咽肌运动神经元.
The motor neurons that dominate the pharyngoesis are located in the suspect nucleus and the anterior motoneurons that control the nucleus accumbens are located in the nucleus tractus solitarius.The anterior motor neurons in the nucleus tractus solitarius play an important role in controlling the swallowing movement, It is unclear what part of the motor neuron is located in the nucleus tractus solitarius.Under the condition of pseudorabies virus, the localization of the anterior motoneurons in the rat pharyngus locus in the nucleus tractus solitarius was studied 48 hours after the injection of pseudorabies virus in the pharynx muscle, The neurons are located only in the semi-dense part of the suspected nucleus, and the animals survive for 56 to 62 hours. The pseudorabies virus-labeled neurons are located in the subnucleus, medial subnucleus and medial subnucleus of the nucleus tractus solitory nucleus. By the Central Loop control, the pharyngeal vagal afferent nerve cells in the nucleus tractus solitarius, and then dominate the suspected pharyngeal motoneurons.