Search
ciliary muscle (Bowman's muscle)
One of the three components of the ciliary body.
Function:
- the ciliary muscle is a parasympathetically innervated smooth muscle facilitating changes in lens shape & thereby accommodation
- fibers innervating the ciliary muscle are components of CN 3 originating in the Edinger-Westphal nucleus, relaying in the ciliary ganglion.
Action:
- contraction allows lens the thicken for near vision (accomodation)
Innervation:
- parasympathetic
- preganglionic fibers
- cell bodies in Edinger-Westphal nucleus
- fibers carried by oculomotor nerve (CN III)
- postganglionic fibers
- cell bodies in ciliary ganglion
- fibers carried by short ciliary nerves
Related
ciliary ganglion; lenticular ganglion; Schacher's ganglion
Edinger-Westphal nucleus
General
smooth muscle (unstriated/unstriped/visceral muscle)
References
- Clinical Anatomy Made Ridiculously Simple. Stephen
Goldberg, MedMaster Inc, Miami, 1995
- Stedman's Medical Dictionary 27th ed, Williams &
Wilkins, Baltimore, 1999
Component-of
ciliary body