superior rectus muscle
Definition
Noun: - The ocular muscle whose contraction turns the eyeball upward and medially: This is one of the six extraocular muscles that control the movement of the eye. Specifically, the superior rectus muscle is responsible for elevating (turning upward) and adducting (turning medially, or toward the nose) the eyeball.
Usage
The term "superior rectus muscle" is used in anatomical, medical, and biological contexts to precisely identify this specific muscle. - The surgeon carefully isolated the superior rectus muscle during the procedure. - Weakness in the superior rectus muscle can cause difficulty looking upward.
Advanced Usage
- Clinical Assessment: In a medical examination, testing the function of the superior rectus muscle is part of evaluating cranial nerve III (the oculomotor nerve).
- The physician checked the patient's eye movements to assess the integrity of the superior rectus muscle.
Variants and Related Words
- Superior rectus: A common shortened form of "superior rectus muscle."
- The superior rectus is innervated by the oculomotor nerve.
- Extraocular muscles: The group of six muscles that includes the superior rectus, inferior rectus, medial rectus, lateral rectus, superior oblique, and inferior oblique.
- SR: A standard medical abbreviation for the superior rectus muscle.
Synonyms
- Superior rectus: The primary synonym, often used interchangeably.
- Rectus superior (less common): The Latin-derived term.
Related Terms (Not Synonyms)
- Inferior rectus muscle: The muscle that turns the eye downward.
- Medial rectus muscle: The muscle that turns the eye inward (toward the nose).
- Lateral rectus muscle: The muscle that turns the eye outward (away from the nose).
Noun
-
the ocular muscle whose contraction turns the eyeball upward and medially
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