Propriospinal Inspiratory Neurons in the Upper Cervical Spinal Cord of the Rabbit: Location and Efferent Spinal Projections

  • Leszek Kubin
  • Jarosław R. Romaniuk


A new group of inspiratory neurons was recently discovered in the upper cervical spinal cord of the cat (Aoki et al., 1980; Aoki, 1982). The group became a subject of several further studies as it could have represented an important relay and processing site interposed between the respiratory neurons of the brain stem and spinal respiratory motoneurons. It has been established that the cervical neurons form a well defined longitudinal column which extends from C1 to C3 cervical segments and send descending projections which may reach lower thoracic segments (Aoki et al., 1984; Lipski and Duffin, 1986). Although a monosynaptic connections of these neurons with either phrenic or external intercostal motoneurons were rather uncommon (Lipski and Duff in, 1986), the neurons still seemed potentially capable of providing indirectly a substantial drive to spinal respiratory motoneurons.


Cervical Spinal Cord Respiratory Neuron Sympathetic Preganglionic Neuron Inspiratory Neuron Phrenic Nerve Activity 
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Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • Leszek Kubin
    • 1
  • Jarosław R. Romaniuk
    • 1
  1. 1.Department of NeurophysiologyMedical Research Center Polish Academy of SciencesWarsawPoland

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