Trochlear Nerve (also known as Nerves, Trochlear, Nerve, Trochlear): The 4th cranial nerve. The trochlear nerve carries the motor innervation of the superior oblique muscles of the eye.

NIH MeSH · D014321Anatomy

Trochlear Nerve

Also known asNerves, Trochlear · Nerve, Trochlear · Trochlear Nerves · Cranial Nerve IV · IV, Cranial Nerve · Nerve IV, Cranial · Fourth Cranial Nerve · Cranial Nerve, Fourth · Cranial Nerves, Fourth · Fourth Cranial Nerves · Nerve, Fourth Cranial · Nerves, Fourth Cranial

Definition

The 4th cranial nerve. The trochlear nerve carries the motor innervation of the superior oblique muscles of the eye.

MeSH classification

  • A08.800.800.120.800

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Related concepts

Abducens Nerve

The 6th cranial nerve which originates in the ABDUCENS NUCLEUS of the PONS and sends motor fibers to the lateral rectus muscles of the EYE. …

Accessory Nerve

The 11th cranial nerve which originates from NEURONS in the MEDULLA and in the CERVICAL SPINAL CORD. It has a cranial root, which joins the …

Common questions about Trochlear Nerve

What does Trochlear Nerve mean in medicine?
The 4th cranial nerve. The trochlear nerve carries the motor innervation of the superior oblique muscles of the eye. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Trochlear Nerve known by any other names?
Yes. Trochlear Nerve is also referred to as Nerves, Trochlear, Nerve, Trochlear, Trochlear Nerves, Cranial Nerve IV in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Trochlear Nerve sit in the medical classification?
Trochlear Nerve falls under the broader medical category "Anatomy" in the MeSH hierarchy (tree numbers: A08.800.800.120.800). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Trochlear Nerve?
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Source: NIH MeSH 2026 (D014321) — National Library of Medicine, public domain. View official MeSH record ↗