6 Ciliary Body Flashcards
The apex of the ciliary body terminates at the ______
It’s like a triangle.. one leg borders the sclera and the other borders the ________
Ora serrata
Posterior chamber
The ciliary body is a ring like structure just behind the _____ and surrounding the __________ of the eye
Iris
Crystalline lens
What part of the ciliary body is wider, more anterior portion containing the ciliary processes?
Pars plicata
Regarding the Pars Plicata… Approximately 70-80 _____ extend into the posterior chamber and the Regions between them are called _______
Ciliary processes
Valleys of Kuhnt
What part of the ciliary body is flatter?
Pars plana
The ora serrata have a serrated pattern, the forward pointing pieces which are teeth, are called ______. The rounded portions beneath the teeth are called _______.
These ______ are elongations of retinal tissue into the region of pars plana
Dentate processes.
Oral bays
Dentate processes
What are the fibers that attach to between the ciliary body and crystalline lens? Manipulate lens during accommodation
Zonule fibers
They course from ciliary body to the lens
List the layers of the ciliary body fro superficial to deep (outer to inner) 4
1) Supraciliaris
2) Ciliary Muscle
3) Ciliary Stroma
4) Ciliary Epithelium
List the layers of the ciliary body from deep to superficial (inner to outer) 4
Ciliary epithelium
Ciliary stroma
Ciliary muscle
Supraciliaris
What’s the loose connective tissue in the ciliary body that contains melanocytes, fibroblasts, and collagen bands?
This arrangement makes the ciliary body to slide but not _______
Supraciliaris
Detach
Damage causes detachment!!!
The ciliary muscle is made up of ____ muscle that has what 3 types of fibers?
Smooth
Longitudinal
Radial
Circular directions
Where do longitudinal muscle fibers lie? What are the anchor points?
Adjacent to the supraciliaris and parallel to sclera
Base: scleral spur
Apex: choroid
Trabecular meshwork
What are the borders of the radial fibers in the ciliary body?
Originate at scleral spur
Insert near base of ciliary process
This is transition layer
What is Mullers muscle formed out of?
Circular muscle bundles with a sphincter type of action.
Circular ciliary muscle
The ciliary body is dually innervated by the autonomic nervous system, which one causes contraction??
PARASYMPATHETIC
What’s the ciliary body layer that’s highly vascularized, LCT, that lies between ciliary muscle and epithelial layers and forms the CORE OF EACH OF THE CILIARY PROCESSES??
Stroma!
What part of the ciliary body is the CORE of each of the ciliary processes?
STROMA
The two epithelial layers of the ciliary body are positioned _____ to ____ because of the invagination of the neural ectoderm in forming the optic cup
Apex to apex
Head to head
Regarding ciliary body epithelium…What connections between the apical surfaces produce a means of cellular communication between the layers and are important in the formation of the aqueous?
GAP JUNCITONS
What are the 3 ciliary body epithelium orientations from apex to apex?
Single layered optic vesicle
Optic cup invagination
Dual layered cup
What layer of the ciliary body epithelium is pigmented and cuboidal?
Outer layer
Which layer of the ciliary body epithelium is nonpigmented?
Composed of _______cells in the pars ______ and cuboidal cells in pars _______
INNER LAYER
Columnar; plana
Plicata
What cells are involved in active section of aqueous humor components and serve as a diffusion barrier between blood and aqueous?
Metabolically active nonpigmented epithelial cells
INNER LAYER
What are the two main functions of the ciliary body?
Produces and secretes aqueous humor
Musculature causes accommodation and affects aqueous outflow
