Ciliary Body Flashcards
Apex of Ciliary Body
at ora serrata
Base of Ciliary Body
tips at scleral spur and post chamber
middle at iris
Pars Plicata
wider, ant portion
has ciliary processes
Valleys of Kuhnt
regions b/t ciliary processes
Pars Plana
flatter, posterior part
from pars plicata to ora serrata
Zonule Fibers
attach ciliary body to lens
modify lens during accomm
some attach to pars plana or valleys of pars plicata
Layers of Ciliary Body
Outer to Inner
Supraciliaris
Ciliary Muscle
Ciliary Stroma
Ciliary Epithelium
Supraciliaris
outer layer of ciliary body
melanocytes, fibroblasts, collagen bands
allows body to slide against sclera w/o detachment
Ciliary Muscle
smooth m in longitudinal, radial, circular directions
Longitudinal M Fibers
adjacent to supraciliaris and parallel to sclera
base at scleral spur, apex in choroid
Radial M Fibers
from scleral spur to base of ciliary processes
Circular M Fibers
inner mm
near major circle of iris
Ciliary Body Innervation
parasymp activates
symp inhibits
Ciliary Stroma
highly vascularized
core of each ciliary process
has major arterial circle of iris
ant to circular m and near iris root
Ciliary Epithelium
Intracellular junctions, desmosomes, tight junctions connect 2 layers
Gap Junctions between for communication
