What is another word for fourth cranial nerve?
Pronunciation: [fˈɔːθ kɹˈe͡ɪnɪəl nˈɜːv] (IPA) 
The fourth cranial nerve is also known as the trochlear nerve, which is one of the twelve cranial nerves in the human body. This nerve is responsible for innervating the superior oblique muscle of the eye, which helps in controlling eye movement and vision. Trochlear nerve arises from the dorsal aspect of the midbrain and runs along the base of the brainstem. It is the smallest cranial nerve and travels the longest distance inside the skull. Other synonyms for the fourth cranial nerve include the fourth cranial nerve, CN IV, or cranial nerve IV. These terms are used interchangeably in the medical field while referring to the same nerve.
