Ciliary body
You don't need to be Editor-In-Chief to add or edit content to WikiDoc. You can begin to add to or edit text on this WikiDoc page by clicking on the edit button at the top of this page. Next enter or edit the information that you would like to appear here. Once you are done editing, scroll down and click the Save page button at the bottom of the page.
| Ciliary body | |
|---|---|
 | |
| Schematic diagram of the human eye | |
| Latin | corpus ciliare |
| Gray's | subject #225 1010 |
| Artery | long posterior ciliary arteries |
| MeSH | Ciliary+Body |
| Dorlands/Elsevier | c_56/12260436 |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Phone:617-525-6884
Please Join in Editing This Page and Apply to be an Editor-In-Chief for this topic: There can be one or more than one Editor-In-Chief. You may also apply to be an Associate Editor-In-Chief of one of the subtopics below. Please mail us [2] to indicate your interest in serving either as an Editor-In-Chief of the entire topic or as an Associate Editor-In-Chief for a subtopic. Please be sure to attach your CV and or biographical sketch.
The ciliary body is the circumferential tissue inside the eye composed of the ciliary muscle and ciliary processes.[1] It is part of the uveal tract—the layer of tissue which provides most of the nutrients in the eye. There are three sets of ciliary muscles in the eye, the longitudinal, radial, and circular muscles. They are near the front of the eye, above and below the lens. They are attached to the lens by connective tissue called the zonule of Zinn, and are responsible for shaping the lens to focus light on the retina.
When the ciliary muscle relaxes, it flattens the lens, generally improving the focus for farther objects. When it contracts, the lens becomes more convex, generally improving the focus for closer objects.
Functions
The ciliary body has three functions: accommodation, aqueous humor production and the production and maintenance of the lens zonules. One of the most essential roles of the ciliary body is the production of the aqueous humor, which is responsible for providing most of the nutrients for the lens and the cornea and involved in waste management of these areas.
Clinical significance
It is the main target of drugs against glaucoma, as the ciliary body is responsible for aqueous humor production; lowering aqueous humor production will cause a subsequent drop in the intraocular pressure.
See also
References
- ↑ Cassin, B. and Solomon, S. Dictionary of Eye Terminology. Gainsville, Florida: Triad Publishing Company, 1990.
External links
- Ciliary+body at eMedicine Dictionary
- Histology at BU 08011loa
- Atlas of anatomy at UMich eye_1 - "Sagittal Section Through the Eyeball"
Sensory system - Visual system - Eye | |
|---|---|
| Fibrous tunic (outer) | Conjunctiva • Sclera • Schlemm's canal • Trabecular meshwork • Limbus Cornea (Epithelium, Bowman's, Stroma, Descemet's, Endothelium) |
| Uvea (middle) | Choroid (Ciliary processes, Choriocapillaris, Bruch's membrane) • Iris (Stroma) • Pupil • Ciliary body |
| Retina (inner) | Macula • Fovea • Optic disc |
| Anterior segment | Anterior chamber • Aqueous humour • Posterior chamber • Lens |
| Posterior segment | Vitreous humour • Zonule of Zinn |
| Intraocular muscles | parasympathetic (Ciliary muscle, Iris sphincter muscle) • sympathetic (Iris dilator muscle) |
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
