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45 Cards in this Set
- Front
- Back
these are deficiencies of the anterior border layer near the collarette
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crypts of Fuch
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this structure is composed of loose CT (collagen fibrils, fibroblasts, ground substance), blood vessels, nerves, and chromatophores
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stroma
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these are composed of a single layer of unfenestrated endothelium
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the capillaries
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T/F
the capilaries are composed of a single layer of unfnestrated endothelium |
T
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this smooth muscle structure is located in the pupillary portion of the stroma and is firmly attached to the stroma that surrounds it
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spincter muscle
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this layer has an epithelial apical section that is usually heavily pigmented and a non-striated muscular basal section that projects into the stroma
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anterior epithelium (myoepithelium) (toward the stroma)
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this is a single layer of heavily pigmented columnar cells whose shape and nuclei are difficult to visualize b/c of the melanin
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posterior epithelium (toward the posterior chamber)
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lumens of these vessels will be evident in some slides
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stroma
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This connective tissue layer, a modification of the stroma, is composed of fibroblasts and melanocytes
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anterior border layer of the Iris
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this layer is too thin to be seen w/ the light microscope
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Bruch's membrane
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this loose CT of the ciliary body fills the processes
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ciliary stroma
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this layer curves around to the anterior surface at the pupilary margin forming the pupillary ruff
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posterior epithelium (toward the posterior chamber)
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this type of crypt is located near the iris root
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peripheral crypts
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T/F
the capillaries are composed of a single layer of fenestrated endothelium |
F
the capillaries are composed of UNFENESTRATED endothelium |
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this layer of the anterior epithelium (myoepithelium) is the non-pigmented muscular basal section that projects into the stroma
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basal section
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the posterior epithelium curves around to the anterior surface at the pupil margin forming the ____ ___
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pupillary ruff
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the transition of the inner non-pigmented epithelium from posteriorly neural layers and anterior/posterior iris epithelium takes place where
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the ora seratta
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this ciliary epithelial layer is continuous posteriorly w/ the pigment epithelium of the retina and anteriorly w/ the anterior iris epithelium
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Outer pigmented epithelium
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these have an unusually thick collagenous adventitia
-what else also have the same characteristics? |
iris blood vessels
-even the arteries |
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these are branching cells found throughout the stroma and are one of the factors that determine iris color
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melanocytes
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this muscle extends from the iris root to approximately the midpoint of the sphincter
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dilator muscle
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this layer contains specialized fenestrated capillaries whose lumen is particularly wide
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choriocapillaris
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this substance forms the core of the ciliary processes
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ciliary stroma
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this is the outermost layer of the ciliary body and is composed of a meshwork of collagen and elastic fibers that insert into the sclera externally and the ciliary muscles internally
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supraciliaris
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these allow fluid to quickly enter and exit the iris stroma during contraction and dilation
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iris crypts
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these cells are found mainly in the region of the sphincter muscle and are thought to be filled with pigment derived from embryonic neural ectoderm
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clump cells
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this muscle fibers are of the basal section of the anterior epithelium (myoepithelium)
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dilator muscle
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what four things is the loose CT in the stroma made up of
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collagen, fibrils, fibroblasts, ground substance
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these are pigmented cells found in the iris and may be either melanocytes or clump cells
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Chromatophores
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these are the principal cells of the iris stroma
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fibroblasts
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this muscular cell layer has an epithelial apical section that is usually heavily pigmented
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Anterior epithelium (myoepithelium)
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at the midpoint of the sphincter, the myoepithelial cells are replaced by ____ ____ cells, which then continue to the pupillary margin
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cuboidal epithelial
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this membrane is a collagen and elastic fiber membrane that is firmly attached to the choriocapilaries externally, and forms the basement membrane of the pigment layer of the retina internally
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Bruch's membrane
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this choroidal structure permits expansion or contraction and some sliding of the choroid w/o detaching from the sclera
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suprachoroid
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this ciliary epithelial layer is continuous posteriorly w/ the neural layers of the retina and anteriorly w/ the posterior iris epithelium
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Inner non-pigmented epithelium
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this layer of the ciliary body allows movement of choroid against sclera and is the site for detachments
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supraciliaris
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T/F
the capillaries are composed of unfenestrated epithelium |
F
the cappillaries are composed of unfenestrated ENDOTHELIUM |
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these are large round cells filled with melanin granules
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clump cells
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this layer may be difficult to see (wont have to ID)
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choriocapillaris
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this structure is the continuation of supraciliaris (b/t choroid and sclera)
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suprachoroid
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this loose connective tissue (of the ciliary body) is located internal to the ciliary muscle and is continuous w/ the choroid stroma posteriorly and the iris stroma anteriorly
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ciliary stroma
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this heavily pigmented connective tissue layer is primarily composed of blood vessels
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Stroma
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this structure lies w/i the ciliary stroma (of the ciliary body) near the iris root
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Major Circle of the Iris
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this network of smooth muscle cells of the ciliary body extends from the scleral spur to the ora seratta
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ciliary muscle
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this connective tissue layer is continuous w/ the supraciliaris and is composed of a meshwork of collagen fibrils that join the choroid to the sclera
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suprachoroid
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