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Dorsal Root Ganglion Cells and Their Processes

  • W. D. WillisJr.
  • R. E. Coggeshall

Abstract

General somatic primary afferent neurons have an especially important place in considerations of spinal sensory mechanisms. These neurons are housed in dorsal root ganglia and their cranial nerve equivalents. At spinal levels they are referred to as dorsal root ganglion cells (DRG cells). These cells are unipolar neurons (sometimes called pseudounipolar since they originated as bipolar cells, [Dogiel, 1908; Ranson, 1912]) with a peripheral process or processes that receive information from sensory receptor organs and a central process or processes that transmit this information centrally (Fig. 3.1). Thus, we can divide the primary afferent neuron into a cell body, a peripheral process or processes, and a central process or processes. The central processes are often referred to as dorsal root axons because they travel in the dorsal root on their way to the cord.

Keywords

Dorsal Root Dorsal Horn Conduction Velocity Vasoactive Intestinal Polypeptide Primary Afferent Neuron 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1991

Authors and Affiliations

  • W. D. WillisJr.
    • 1
  • R. E. Coggeshall
    • 1
  1. 1.The University of Texas Medical Branch at GalvestonGalvestonUSA

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