Ciliary processes

Short description: Glands in the eye which produce aqueous humor

Ciliary processes

Interior of anterior half of bulb of eye. (Ciliary process visible at upper right.)

Sagittal diagram of the eye. Ciliary process visible superior to the lens, immediately above the Zonule of Zinn.

Details
Artery| short posterior ciliary arteries
Identifiers
Latin| processus ciliares
Anatomical terminology

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In the anatomy of the eye, the ciliary processes are formed by the inward folding of the various layers of the choroid, viz. the choroid proper and the lamina basalis, and are received between corresponding foldings of the suspensory ligament of the lens.

## Contents

* 1 Anatomy
* 2 Function
* 3 References
* 4 External links

## Anatomy

They are arranged in a circle, and form a sort of frill behind the iris, around the margin of the lens.

They vary from sixty to eighty in number, lie side by side, and may be divided into large and small; the former are about 2.5 mm. in length, and the latter, consisting of about one-third of the entire number, are situated in spaces between them, but without regular arrangement.

They are attached by their periphery to three or four of the ridges of the orbiculus ciliaris, and are continuous with the layers of the choroid: their opposite extremities are free and rounded, and are directed toward the posterior chamber of the eyeball and circumference of the lens.

In front, they are continuous with the periphery of the iris.

Their posterior surfaces are connected with the suspensory ligament of the lens.

## Function

The ciliary processes produce aqueous humour.

## References

## External links

* Histology at une.edu
* Histology image: 08011loa – Histology Learning System at Boston University
* http://www.lab.anhb.uwa.edu.au/mb140/CorePages/eye/eye.htm#iris

* v
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Anatomy of the globe of the human eye

Fibrous tunic (outer)|

| Sclera|

* Episcleral layer
* Schlemm's canal
* Trabecular meshwork

|

Cornea|

* Limbus
* layers
* Epithelium
* Bowman's
* Stroma
* Dua's layer
* Descemet's
* Endothelium

1:posterior segment 2:ora serrata 3:ciliary muscle 4:ciliary zonules 5:Schlemm's canal 6:pupil 7:anterior chamber 8:cornea 9:iris 10:lens cortex 11:lens nucleus 12:ciliary process 13:conjunctiva 14:inferior oblique muscule 15:inferior rectus muscule 16:medial rectus muscle 17:retinal arteries and veins 18:optic disc 19:dura mater 20:central retinal artery 21:central retinal vein 22:optic nerve 23:vorticose vein 24:bulbar sheath 25:macula 26:fovea 27:sclera 28:choroid 29:superior rectus muscle 30:retina

Uvea/vascular tunic (middle)|

| Choroid|

* Capillary lamina of choroid
* Bruch's membrane
* Sattler's layer

|

Ciliary body|

* Ciliary processes
* Ciliary muscle
* Pars plicata
* Pars plana

Iris|

* Stroma
* Pupil
* Iris dilator muscle
* Iris sphincter muscle

Retina (inner)|

| Layers|

* Inner limiting membrane
* Nerve fiber layer
* Ganglion cell layer
* Inner plexiform layer
* Inner nuclear layer

* Outer plexiform layer
* Outer nuclear layer

* External limiting membrane
* Layer of rods and cones
* Retinal pigment epithelium

|

Cells|

* Photoreceptor cells (Cone cell, Rod cell) → (Horizontal cell) → Bipolar cell → (Amacrine cell) → Retina ganglion cell (Midget cell, [[Biology:Parasol cParasol cell, [[Bistratified cell]], Giant retina ganglion cells, Photosensitive ganglion cell) → Diencephalon: P cell, M cell, K cell, Muller glia

Other|

* Macula
* Perifoveal area
* Parafoveal area
* Fovea
* Foveal avascular zone
* Foveola
* Optic disc
* Optic cup
* Ora serrata

Anatomical regions of the eye|

| Anterior segment|

* Adnexa
* Fibrous tunic
* Anterior chamber
* Aqueous humour
* Iris
* Posterior chamber
* Ciliary body
* Lens
* Capsule of lens
* Zonule of Zinn

|

Posterior segment|

* Vitreous chamber
* Vitreous body
* Retina
* Choroid

Other|

* Keratocytes
* Ocular immune system
* Optical coherence tomography
* Eye care professional
* Eye disease
* Refractive error
* Accommodation
* Physiological Optics
* Visual perception

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