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Cranial Nerves
 
 

CN VI: Abducens Nerve

 
 
 
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Overview

  • Role

  • Somatic motor - eye abduction (lateral rectus).

Abducens Nerve Palsy

  • Abnormalities

  • Inwardly-turned eye
  • Horizontal diplopia
  • Strabismus
  • Inability to look laterally
  • Causes of Abducens Nerve Palsy

  • Small-vessel ischaemia
  • Head trauma
  • Tumour
  • Aneurysm

Motor Pathway

Cortical Centre
Primary motor cortex (frontal lobe)
 
 
Abducens Nucleus
Pons
 
Foramen
Superior orbital fissure
 
 
Muscle
Lateral rectus
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