abducens muscle
Definition
Noun: * The abducens muscle is a specific muscle of the eye. Its primary function is to rotate the eyeball laterally, or outward, away from the nose. It is one of the six extraocular muscles that control eye movement.
Usage
The term "abducens muscle" is used in technical, medical, and anatomical contexts to describe this specific structure and its function. * The abducens muscle is innervated by the abducens nerve (cranial nerve VI). * Paralysis of the abducens muscle results in an inward deviation of the eye, a condition known as esotropia. * During the examination, the doctor tested the function of each abducens muscle.
Advanced Usage
- The muscle is formally known as the lateral rectus muscle. "Abducens muscle" is a functional name derived from its action (abduction of the eye), while "lateral rectus" is its anatomical name based on position and shape.
- In clinical notes, it may be abbreviated as LR (for lateral rectus).
Variants and Related Words
- Lateral rectus (muscle): The full anatomical name for the abducens muscle.
- Abducens nerve (Cranial nerve VI): The nerve that supplies and controls the abducens muscle.
- Abduction (of the eye): The movement performed by the abducens muscle (turning the eye outward).
- Extraocular muscles: The group of six muscles, including the abducens/lateral rectus, that move the eyeball.
Synonyms
- Lateral rectus (muscle)
- Musculus rectus lateralis bulbi (full Latin anatomical term)
Antonyms
- Medial rectus muscle: The ocular muscle whose contraction turns the eyeball inward (adduction).
Noun
-
the ocular muscle whose contraction turns the eyeball outward
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