Projections from respiratory neurons of medulla oblongata to the motor neuron pool of phrenic nerve in rat:An HRP retrograde tracing study
- VernacularTitle:大鼠延髓呼吸性神经元向脊髓膈运动神经元投射的实验观察
- Author:
Li-qing WANG
;
De-qiang JING
;
Su-zhen ZHANG
- Publication Type:Journal Article
- Keywords:
horseradish peroxidase (HRP), rat, phrenic motor neuron, medulla oblongata, respiratory neuron, nucleus retroambigualis (RNA), nucleus retrofacialis (NRF)
- From:
Chinese Journal of Rehabilitation Theory and Practice
2004;10(10):590-591
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo observe the projections from respiratory neurons of medulla oblongata to the motor neuron pool of phrenic nerve in rat. MethodsBy using horseradish peroxidase (HRP) retrograde tracing technique after injecting HRP into phrenic nerve, retrograde labelled neurons were found in C3-C5 segment. Then, HRP was injected into the area where the phrenic motor neurons occupied, retrograde labelled neurons were found in medulla oblongata. ResultsPhrenic motor neurons locate in the C3-C5 segment ipsilaterally, occuping the intermediate portion of anterior horn and appearing typical motor neurons. Retrograde labelled neurons were found bilaterally in medulla oblongata, the neurons were located in nucleus retroambigualis (RNA), ventramedial area to nucleus retrofacialis (NRF). ConclusionThe phrenic motor neurons may receive direct projection of respiratory neuron in medulla oblongata, the projecting neurons are distributed in RNA and NRF area.
