Lexic.us

Definition of Fourth cranial nerve

1. Noun. Either of the two cranial nerves on either side that control the superior oblique muscles of the eyes.

Medical Definition of Fourth cranial nerve

1. The trochlear nerve controls an extraocular muscle. Lesions of this nerve will result in rotation of the eyeball upward and outward (and double vision). Synonym: cranial nerve IV. (27 Sep 1997)

Lexicographical Neighbors of Fourth Cranial Nerve

Literary usage of Fourth cranial nerve

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Text-book of Histology by Frederick Randolph Bailey (1906)
"substantia mgra; IV, root fibres of fourth cranial nerve; .v/f" decussation of root fibres of fourth cranial nerve: x, gray matter forming floor of iter: xF ..."

2. The British and Foreign Medical Review: Or Quarterly Journal of Practical (1844)
"The fourth cranial nerve is united to the prolongation issuing from the posterior pair of the corpora quadrigemina to join the lateral fasciculus in the ..."

3. Physical diagnosis by Wallace Dickinson Rose (1917)
"The fourth cranial nerve (trochlear) supplies the superior oblique muscle of the eye. The sixth cranial nerve (abducent) supplies the external rectus muscle ..."

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