dilatator pupillae in dogs
A smooth muscle of the eye, running radially in the iris that functions as a dilator. [WP,unvetted]. Every claim on this page comes from the Leumas anatomy graph and carries its source.
What the dilatator pupillae is
A smooth muscle of the eye, running radially in the iris that functions as a dilator. [WP,unvetted]. The atlas records it as a tissue at the tissue scale in the dog.
Where the dilatator pupillae is
It sits in the head, within the muscular and sensory systems. Not positioned individually, and containment is not asserted either. Drawn near structures of the same kind, which is a weak claim about location.
What the dilatator pupillae connects to
The atlas records 6 typed relationships for it, across 5 kinds of connection. a kind of anatomical structure and iris smooth muscle.
Supply and innervation
This dataset asserts no arterial supply, venous drainage or innervation for the dilatator pupillae. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.
Also called
Also recorded as dilator muscle of pupil, dilator of pupil, dilator pupillae, dilator pupillae muscle, iris dilator muscle and musculus dilatator pupillae, and 10 more. Searching any of those names reaches this page.
Source
Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001608, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.
- A kind of: anatomical structure and iris smooth muscle.
- antagonist of: sphincter pupillae.
- Develops from: neuroectoderm.
- inserts into: iris.
- originates from: iris.
Questions
Where is the dilatator pupillae?
It sits in the head, within the muscular and sensory systems. Not positioned individually, and containment is not asserted either. Drawn near structures of the same kind, which is a weak claim about location.
What does the dilatator pupillae connect to?
A kind of: anatomical structure and iris smooth muscle.
Is the dilatator pupillae the same in other species?
This page describes the dog. The human record of the same structure sits beside it on /compare, over one shared model rather than two atlases built separately.