Inferior rectus muscle
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The inferior rectus muscle, is shown in this superior view of the eye, along with its axis of rotation. The other muscle is the superior oblique muscle, which angles around the trochlea.
|Latin||musculus rectus inferior bulbi|
|Origin||annulus of Zinn at the orbital apex|
|Insertion||6.5 mm inferior to the limbus|
|Nerve||inferior branch of oculomotor nerve|
|Actions||depression and adduction|
|Anatomical terms of muscle|
See also: Extraocular muscles
See also: Eye movement
The inferior rectus muscle is the only muscle that is capable of depressing the pupil when it is in a fully abducted position.
- "Eye Theory". Cim.ucdavis.edu. Retrieved 2010-11-27.
- Origin, insertion and nerve supply of the muscle at Loyola University Chicago Stritch School of Medicine
- Anatomy figure: 29:01-07 at Human Anatomy Online, SUNY Downstate Medical Center
- inferior+rectus+muscle at eMedicine Dictionary
- lesson3 at The Anatomy Lesson by Wesley Norman (Georgetown University) (orbit5)
- Diagram at mun.ca