sphincter pupillae


Also found in: Dictionary, Thesaurus.
Related to sphincter pupillae: Dilator pupillae

sphinc·ter pu·pil·'lae

[TA]
a ring of smooth muscle fibers surrounding the pupillary border of the iris.

sphinc·ter pu·pil·lae

(sfingk'tĕr pyū-pil'ē) [TA]
A ring of smooth muscle fibers surrounding the pupillary border of the iris.
Synonym(s): musculus sphincter pupillae [TA] , sphincter muscle of pupil.
Full browser ?