ANATOMICAL STRUCTURE GUIDEFMA58237Sensory organs

Left iris

The contractile pigmented diaphragm of the eye located anterior to the lens, regulating the size of the pupil and the amount of light reaching the retina.

Verified Structure Metadata
FMA58237
FMA Reference ID
1
Modeled 3D Mesh
Primary System: Sensory organs
01 · Main Function

What Does the Left iris Do?

The contractile pigmented diaphragm of the eye located anterior to the lens, regulating the size of the pupil and the amount of light reaching the retina.

02 · Anatomical Location

Where Is It Located in the Body?

Situated in the cranial / head region (midline / bilateral aspect, anterior aspect) within the sensory organs.

03 · Interactive 3D Model

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FMA ID: FMA58237 · Modeled Mesh IDs: FJ1297
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04 · Continue Exploring Related Structures

Related Organs & Anatomical Structures

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05 · Connected Body Systems

Explore Connected Physiological Systems

Sensory organs transduce physical stimuli into neural signals carried by cranial nerves (such as the optic chiasm and oculomotor nerves) to the brain.

Extraocular muscles (rectus and oblique muscles) attach to the sclera to precisely rotate and align the eyeballs.

The bony orbits and temporal bones of the skull house and protect the delicate structures of sight, hearing, and balance.