MUSCULUS RECTUS SUPERIOR Meaning and
Definition
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Musculus rectus superior, also known as the superior rectus muscle, is a term used in anatomy to describe one of the six extraocular muscles of the eye. It is located in the anterior part of the eye and is responsible for various movements and positioning of the eyeball.
The musculus rectus superior is a relatively large, spindle-shaped muscle that originates from a tendinous ring called the annulus of Zinn. It runs anteriorly from its origin and attaches to the superior surface of the eyeball near the cornea. The muscle is innervated by the superior division of the oculomotor nerve (cranial nerve III).
The main function of the musculus rectus superior is to elevate the eye in an upward direction. It is responsible for movements such as upward gaze and intorsion (rotation of the eye inward). Additionally, it assists in stabilizing the eye when the head moves, helping to maintain focus on a specific target.
Abnormalities or dysfunctions of the musculus rectus superior can lead to various eye disorders and visual impairments, such as strabismus (crossed eyes) or hypertropia (abnormal vertical deviation of the eye).
Overall, the musculus rectus superior plays a crucial role in the coordinated movements of the eye, contributing to the complex mechanism that enables humans to have binocular vision and perceive the world around them.
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Origin, upper margin of the optic foramen and fibrous sheath of the optic nerve; insertion, sclerotic coat of the eye; nerve supply, oculomotorius; action, moves the eyeball upward.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for MUSCULUS RECTUS SUPERIOR
- m usculus rectus superior
- mu sculus rectus superior
- mus culus rectus superior
- musc ulus rectus superior
- muscu lus rectus superior
- muscul us rectus superior
- musculu s rectus superior
- musculus r ectus superior
- musculus re ctus superior
- musculus rec tus superior
- musculus rect us superior
- musculus rectu s superior
- musculus rectus s uperior
- musculus rectus supe rior
- musculus rectus super ior
- musculus rectus superi or
- musculus rectus superio r
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