Iris dilator muscle
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| Iris dilator muscle | |
|---|---|
 | |
| Iris, front view. (Muscle visible but not labeled.) | |
 | |
| The upper half of a sagittal section through the front of the eyeball. ("Radiating fibers" labeled near center.) | |
| Latin | musculus dilatator pupillae |
| Gray's | subject #225 1013 |
| Origin | |
| Insertion | |
| Artery: | |
| Nerve: | superior cervical ganglion (sympathetics) |
| Action: | dilates pupil |
| Antagonist: | iris sphincter muscle |
| Dorlands /Elsevier | m_22/12548821 |
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The iris dilator muscle (pupil dilator muscle, pupillary dilator, radial muscle of iris, radiating fibers), is a muscle of the eye. It is innervated by the sympathetic system.
Additional images
 Sympathetic connections of the ciliary and superior cervical ganglia. |
See also
External links
- Description of function at tedmontgomery.com
- Slide at mscd.edu
- dilator+pupillae+muscle at eMedicine Dictionary
- Histology at Boston University 08010loa
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Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
