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Globul ocular

Globul ocular. Analizatorul vizual.Organ de simt. Ochii -organe de simt pereche asezate la nivelul fetei.Ei sunt adapostiti in orbite si inconjurati de organe anexe care le asigura protectia si mobilitatea. Globul ocular.

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Globul ocular

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  1. Globul ocular Analizatorulvizual.Organ de simt

  2. Ochii-organe de simtperecheasezate la nivelulfetei.Eisuntadapostiti in orbitesiinconjurati de organeanexe care le asiguraprotectiasimobilitatea.

  3. Globul ocular • -are o forma aproapesferica ,cu un diametru de 2.5cm si o greutate de aproximativ 6 grame .Este un oragan complex sinumai o mica parte din structurile sale sunt implicate in receptarealuminii, adica in FOTORECEPTIE.

  4. Tunica externa • Este formata din douapartidiferite ca structurasiintindere : • sclerotica(albulochiului)formeazaceamai mare parte a tuniciiexterne. • corneea–situata anterior ,transparentasisubtirepermitandluminiisaintre in ochi

  5. Tunica mijlocie • Este formata din maimulteparti: • coroida-se afla sub sclerotica • corpulciliar-secretaumoareaapoasa • Irisul-,,daculoareaochilor ‘’

  6. Tunica interna • Este alcatuita din maimultestructuri de celule: • celule cu bastonas-prezintaprelungiri in forma de bastonassisuntdispuse cu precaderespreperiferiaretinei. • celule cu con-numitedatoritauneiprelungiri in forma de con suntdispuse la nivelulunei zone retinenumitaPatagalbena

  7. Vamultumescpentruatentie!! • Samson Ana-Maria • Clasa a VI-aA • Bibliografie:www.google.com • Manalclasa a 7-aA • Profesor: StupineanuValentina

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