Classification of cranial nerve fibers and nuclei

Nervous system divided into

• Somatic (afferent or efferent)
  • Environment
• Autonomic (visceral), (afferent or efferent)
  • Internal organs
• Special fibers (somatic/visceral afferent or somatic/visceral efferent)
  • Fiber types associated with particular structures (e.g., auditory apparatus and taste buds)

Dived by efferent/afferent

• Efferent (away from brain)
  • General Somatic
    • Skeletal musle
  • General Visceral
    • Smooth muscle, organs, glands etc
  • Special Vicseral
    • Skeletal muscle and cardiac muscle dervied from branchial arches
• Afferent
  • General Somatic
    • Sensation from skin, muscle
  • General Visceral
    • Conduct sensation from viscera, blood vessel
  • Special Vicseral
    • Sense from taste buds and olfactory
  • Special Somatic
    • Impulses from retina, auditory and vestibular SE = somatic efferent, SVE = special visceral efferent, GVE = general visceral efferent, GVA = general visceral afferent, SVA = special visceral afferent, GSA = general somatic afferent, SSA = special somatic afferent.