Nerf optig

Mae'r nerf optig (hefyd nerf olygol, nerf y llygad), sydd hefyd yn cael ei adnabod fel nerf greuanol II, yn nerf cyplysedig sy'n anfon gwybodaeth

Nerf optig
Nerf optig
Enghraifft o:nerfau creuanol, nerf synhwyro, dosbarth o endidau anatomegol Edit this on Wikidata
Mathnerve trunk, endid anatomegol arbennig Edit this on Wikidata
Cysylltir gydallygad, ymennydd Edit this on Wikidata
Dynodwyr
Freebase/M/013wbs edit this on wikidata
Thesawrws y BNCF44355 edit this on wikidata
UMLS CUIC0029130 edit this on wikidata
Tudalen Comin Ffeiliau perthnasol ar Gomin Wicimedia

Mae'r nerf optig (hefyd nerf olygol, nerf y llygad), sydd hefyd yn cael ei adnabod fel nerf greuanol II, yn nerf cyplysedig sy'n anfon gwybodaeth weledol o'r retina i'r ymennydd. Mewn bodau dynol, mae'r nerf optig yn tarddu o goesynnau optig yn ystod seithfed wythnos datblygiad y ffetws, ac wedi'i gyfansoddi o acsonau celloedd ganglion retinol a chelloedd glial. Mae'n ymestyn o'r dallbwynt (neu ddisg optig) i'r ciasma optig ac yn parhau wrth i'r llwybr optig i'r cnewyllyn gliniog ochrol, cnewyll cyndectol a'r coliciwlws uwch.[1][2]

Gweler hefyd

Cyfeiriadau

  1. ↑ Vilensky, Joel; Robertson, Wendy; Suarez-Quian, Carlos (2015). The Clinical Anatomy of the Cranial Nerves: The Nerves of "On Olympus Towering Top". Ames, Iowa: Wiley-Blackwell. ISBN 978-1118492017.
  2. ↑ Selhorst, JB; Chen, Y (2009). "The Optic Nerve". Seminars in Neurology 29: 29–35.

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