Back عضلة هدبية Arabic Cilijarni mišić BS Múscul ciliar Catalan Ciliární sval Czech Músculo ciliar Spanish Muskulu ziliar Basque ماهیچه مژگانی Persian Sädelihas Finnish Muscle ciliaire French Músculo ciliar Galician
| Ciliary muscle | |
|---|---|
 | |
| Details | |
| Pronunciation | UK: /ˈsɪliəri/, US: /ˈsɪliɛri/[2] |
| Origin | 1) longitudinal fibers → scleral spur; 2) circular fibers → encircle root of iris[1] |
| Insertion | 1) longitudinal fibers → ciliary process, 2) circular fibers → encircle root of iris[1] |
| Artery | Long posterior ciliary arteries |
| Vein | Vorticose vein |
| Nerve | Short ciliary Parasympathetic fibers in the oculomotor nerve (CN-III) synapse in the ciliary ganglion. Parasympathetic postganglionic fibers from the ciliary ganglion travel through short ciliary nerves into the ocular globe. |
| Actions | 1) Accommodation, 2) regulation of trabecular meshwork pore sizes |
| Identifiers | |
| Latin | musculus ciliaris |
| TA98 | A15.2.03.014 |
| TA2 | 6770 |
| FMA | 49151 |
| Anatomical terms of muscle | |
The ciliary muscle is an intrinsic muscle of the eye formed as a ring of smooth muscle[3][4] in the eye's middle layer, uvea (vascular layer). It controls accommodation for viewing objects at varying distances and regulates the flow of aqueous humor into Schlemm's canal. It also changes the shape of the lens within the eye but not the size of the pupil[5] which is carried out by the sphincter pupillae muscle and dilator pupillae.
- ^ a b Gest, Thomas R; Burkel, William E. "Anatomy Tables - Eye." Medical Gross Anatomy. 2000. University of Michigan Medical School. January 5, 2010 Umich.edu Archived 2010-05-26 at the Wayback Machine
- ^ Wells, John C. (2008). Longman Pronunciation Dictionary (3rd ed.). Longman. ISBN 978-1-4058-8118-0.
- ^ Kleinmann, G; Kim, H. J.; Yee, R. W. (2006). "Scleral expansion procedure for the correction of presbyopia". International Ophthalmology Clinics. 46 (3): 1–12. doi:10.1097/00004397-200604630-00003. PMID 16929221. S2CID 45247729.
- ^ Schachar, Ronald A. (2012). "Anatomy and Physiology." (Chapter 4) The Mechanism of Accommodation and Presbyopia. Kugler Publications. ISBN 978-9-062-99233-1.
- ^ Land, Michael (Apr 19, 2015). "Focusing by shape change in the lens of the eye: a commentary on Young (1801) 'On the mechanism of the eye'". Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences. 370 (1666). School of Life Sciences, University of Sussex, Brighton: Philosophical Transactions of the Royal Society B: Biological Sciences: 20140308. doi:10.1098/rstb.2014.0308. PMC 4360117. PMID 25750232.