Terminology Service for NFDI4Health
trochlear nerve
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http://purl.obolibrary.org/obo/UBERON_0001644
A cranial nerve that runs to the eye muscles. [ http://en.wikipedia.org/wiki/Trochlear_nerve https://www.worldcat.org/search?q=bn%3A0471209627 ]
Term info
Label
trochlear nerve
Synonyms
- cranial nerve IV
- fourth cranial nerve
- nervus trochlearis [IV]
- superior oblique nerve
- trochlear IV nerve
- trochlear nerve [IV]
- trochlear nerve tree
Subsets
uberon_slim, pheno_slim, vertebrate_core
depicted by
http://purl.obolibrary.org/obo/Trochlear_nerve.png
development notes
The human trochlear nerve is derived from the basal plate of the embryonic midbrain.
external definition
Somatic efferent nerve which supplies a single eye muscle, the m. obliquus superior.[AAO]
has obo namespace
uberon
has related synonym
pathetic nerve, trochlear, trochlear nerve or its root, CN-IV, nervus trochlearis, trochlear nerve/root, nerve IV
homology notes
We conclude this section by listing some of the many synapomorphies of craniates, including (...) (5) cranial nerves (...) (reference 1); Phylogenetically, the cranial nerves are thought to have evolved from dorsal and ventral nerves of a few anterior spinal nerves that became incorporated into the braincase. Dorsal and ventral nerves fuse in the trunk but not in the head, and they produce two series: dorsal cranial nerves (V, VII, IX, and X) and ventral cranial nerves (III, IV, VI, and XIII) (reference 2).[well established][VHOG]
id
UBERON:0001644
taxon notes
Homologous trochlear nerves are found in all jawed vertebrates
Term relations
Equivalent to:
- cranial nerve and innervates some superior oblique extraocular muscle and extends_fibers_into some trochlear nucleus