b.Ciliary body:triangle intransversesectionStructure:3layers* Ciliary muscle:longitudinal, radial, &circular* ciliary stroma:c.t. rich in b.v?Ciliary epithelium:cuboidal or columnarouter:pigmentedlayerinner: nonpigmentedlayerproduce aqueous humor
b. Ciliary body: triangle in transverse section Structure: 3 layers * Ciliary muscle: longitudinal, radial, & circular 11 * Ciliary stroma: c.t. rich in b.v * Ciliary epithelium: cuboidal or columnar outer: pigmented layer inner: nonpigmented layer produce aqueous humor
CiliaryprocessConnectivetissueZonules:extends fromCiliarybodyciliary process to thecapsule of lens.Function:Ciliary(1) Ciliary M.: regulateprocessesrefractivepoweroflensto facilitate seeing a nearZonulefibersor a distant object.(2) Ciliary epi. Cells:Lenssecrete aqueous humor,&synthesizeproteintoform ciliary zonules. 12
Ciliary process Zonules: extends from ciliary process to the capsule of lens. Function: 12 （1）Ciliary M.: regulate refractive power of lens to facilitate seeing a near or a distant object. （2）Ciliary epi. Cells: secrete aqueous humor, & synthesize protein to form ciliary zonules
CopyrighteTheMcGraw-Hl Companies,Inc.Permission requiredforreproductionordisplayCiliary musclefibersrelaxedSuspensoryligamentstautLensthinCiliary musclefiberscontractedSuspensoryligamentsrelaxedLensthickAccommodation
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PigmentedepithellumCapillaryMelanin-containingcellsSclera20μmC. Choroid: posterior 2/3. LCT, highly vascularizedabundantofmelanocytes.14
14 c. Choroid: posterior 2/3. LCT, highly vascularized, abundant of melanocytes
3.Retina:ant. portion:notphotosensitive,liningoftheciliary body andthe posteriorpart of the irispost. portion:Ora serrataOptic nerve15
3. Retina: ant. portion: not photosensitive, lining of the 15 ciliary body and the posterior part of the iris post. portion: Ora serrata