Dilator pupillae
Dilatator pupillae
- Latin synonym: Musculus dilatator pupillae
- Synonym: Dilator pupillae muscle
- Related terms: Dilator pupillae muscle
Definition
Nerve: Superior cervical ganglion (sympathetics)
Action: Pupil dilation
Antagonist: Iris sphincter muscle
Description:
The radiating muscular fibers of the iris form the Dilatator pupillae; they converge from the circumference toward the center, and blend with the circular fibers near the margin of the pupil.
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