root filament (radicular fila, dorsal/ventral rootlet)

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Introduction

The small individual fiber fascicles into which the roots of all of the spinal nerves & several cranial nerves (hypoglossus, vagus, oculomotorius) divide in fanlike fashion before entering or leaving the spinal cord.

Dorsal filaments: carry sensory information to the CNS

Ventral filaments: convey motor information from the CNS to the periphery

More general terms

Additional terms

References

  1. Stedman's Medical Dictionary 27th ed, Williams & Wilkins, Baltimore, 1999.
  2. Grant's Atlas of Anatomy, 10th edition, AMR Agur & MJ Lee (eds), Lippincott Williams & Wilkins, Philadelphia, PA 1999.