Aparato lagrimal Referencias Enlaces externos Menú de navegaciónA15.2.07.056pág.102855605Diagrama en hixie.ch

Ojo


orbitaleslágrimas














Aparato lagrimal

Gray 896 español (aparato lagrimal).png
El aparato lagrimal, del lado derecho.

Latín
[TA]: apparatus lacrimalis
TA
A15.2.07.056
Sistema
Vista
Enlaces externos
Gray
pág.1028
FMA
55605

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El aparato lagrimal (del latín: apparatus lacrimalis) es el sistema fisiológico que contiene las estructuras orbitales para la producción y el drenaje de lágrimas.[1]​
Está compuesto por:


  • (a) La glándula lagrimal, que secreta las lágrimas, y sus conductos excretores, que conducen el líquido a la superficie del ojo, se encuentra en la fosa lagrimal localizada en la superficie superexterna de la órbita. Se halla fuera del saco conjuntival, aunque se comunica con el ojo a través de 6 a 12 conductos secretores que se abren dentro del saco en la porción externa del saco conjuntival superior. La glándula es tubulo-alveolar compuesta y serosa, semejante a otra glándula como la parótida. Sus acinos secretores están rodeados por completo de células miopiteliales;

  • (b) los canalículos lagrimales, el saco lagrimal, y el conducto nasolagrimal, por los cuales el fluido se transporta hacia la cavidad nasal;

  • (c) el saco lagrimal, una porción dilatada del sistema de conductos, está revestido de epitelio cilíndrico ciliado seudoestratificado;

  • (d) el conducto nasolagrimal, que traslada el líquido lagrimal a la cavidad nasal, que también posee un recubrimiento de epitelio cilíndrico ciliado seudoestratificado. Este conducto lleva líquido lagrimal al meato inferior situado en el piso de la cavidad nasal.


Referencias



  1. ↑ Cassin, B. and Solomon, S. Dictionary of Eye Terminology. Gainsville, Florida: Triad Publishing Company, 1990.



Enlaces externos


  • Diagrama en hixie.ch

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