abducent nerve
Definition
Noun: A cranial nerve that controls the lateral rectus muscle, responsible for moving the eyeball outward (abduction). It is the sixth cranial nerve.
Usage
The term "abducent nerve" is used in medical and anatomical contexts to specify this particular nerve. It is often discussed in relation to eye movement disorders or neurological examinations.
Examples: * Damage to the abducent nerve can cause double vision. * The abducent nerve emerges from the brainstem. * The function of the abducent nerve is to abduct the eye.
Advanced Usage
- Clinical Context: The nerve is frequently referenced in diagnoses like "abducent nerve palsy," which leads to an inability to move the eye laterally.
- Comparative Anatomy: Discussions may compare the pathway and vulnerability of the abducent nerve to other cranial nerves.
Variants and Related Words
- Abducens nerve: A completely synonymous term. "Abducens nerve" is equally common in medical literature.
- Cranial nerve VI: The numerical designation for the abducent nerve.
- Lateral rectus muscle: The specific muscle innervated by the abducent nerve.
- Abducent (adj): Related to abduction (moving away from the midline). For example, "abducent movement."
Synonyms
- Abducens nerve
- Sixth cranial nerve
- Cranial nerve VI
Related Phrases
- Abducent nerve palsy: A medical condition characterized by paralysis of this nerve.
- Innervate the lateral rectus: A phrase describing the primary function of the abducent nerve.
Noun
-
a small motor nerve supplying the lateral rectus muscle of the eye
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