left trochlear nerve
Nervous systemHeadLeftFMA50882
Nomenclature
left trochlear nerve
nervus trochlearis (Latin)
nervo trocleare sinistro (Italian)
Descriptionentry
The slenderest cranial nerve, with the longest intracranial course.
Functionentry
Innervates the superior oblique muscle of the eye.
Blood supplyentry
Meningeal branches.
Clinical notes
Palsy causes vertical diplopia that worsens on looking down.
Model