MUSCULUS RECTUS MEDIALIS Meaning and
Definition
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Musculus rectus medialis, also known as the medial rectus muscle, is a term that originates from Latin and anatomical language. It refers to one of the extraocular muscles, which plays a vital role in eye movements and vision.
The musculus rectus medialis is one of six muscles responsible for controlling the movements and positioning of the eyeball within the eye socket. It is located adjacent to the inner side of the eye and is responsible for medially or internally rotating the eyeball. This means it directs the eye towards the nose, enabling convergence or focusing on objects that are close in proximity.
The muscle originates from a small tendinous ring known as the common tendinous ring, which is located in the back of the eye socket. From there, the muscle fibers extend forward towards their insertion point, which is the anterior scleral surface. The tendon of the muscle then attaches to the eyeball, specifically the medial surface of the eyeball.
When the musculus rectus medialis contracts, it pulls on the eye, causing it to move medially or inward toward the nose. This enables coordinated eye movements and allows both eyes to focus on a single object, facilitating depth perception and stereoscopic vision. Any dysfunction or weakness in the medial rectus muscle can result in eye misalignment disorders such as esotropia or inward deviation of the eye.
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M. rectus internus; origin, by a common tendon with the rectus inferior, the annulus tendineus communis or ligament of Zinn, from the lower and inner margin of the optic foramen; insertion, sclerotic coat of the eye; nerve supply, oculomotorius; action, moves eyeball inward.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for MUSCULUS RECTUS MEDIALIS
- nusculus rectus medialis
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- musfulus rectus medialis
- musdulus rectus medialis
- muscylus rectus medialis
