Iris dilator muscle

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Iris dilator muscle
Gray878.png
Iris, front view. (Muscle visible but not labeled.)
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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

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


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

See also

External links

hu:Musculus dilatator pupillae sr:Мишић дилататор зенице