Yale- Cranial Nerve 4, pg. 7 Page header & navigation buttons.


Chapter contents

Overview

Origin, central course

Intracranial course

Final innervation

Clinical correlation

Unique features
 
Cranial Nerve IV - Trochlear Nerve Page 7 of 7

Unique Features

The trochlear nerve has several features that make it unique from the other cranial nerves:
  • Is the only nerve to exit from the dorsal surface of the brain.

  • Is the only nerve in which all the lower motor neuron fibers decussate.

  • Has the longest intracranial course.

  • Has the smallest number of axons.


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Last revised: March 22, 1998