Trochlear nerve (CN IV) palsy
From Dissectible Me 5 minute anatomy by dissectibleme
May 1, 2026 · 6 min · Episode 199
About this episode
This episode discusses the effects of trochlear nerve injury on eye movement.
The trochlear nerve (CN IV) has the single task of innervating the superior oblique muscle. Unfortunately the actions of this muscle on the eye are a little awkward to understand, so how is the eye affected if the trochlear nerve is injured?
Topics covered
- anatomy
- nervous system
- eye movement
- neurology
- palsy
Keywords
- trochlear nerve
- CN IV
- palsy
- superior oblique muscle
- eye movement
Mentioned in this episode
Organizations: trochlear nerve, superior oblique muscle, CN IV
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