A na gani jijiya, ta sifa da aiki

A na gani jijiya nasa ne sosai na musamman jijiyoyi da tsarin kama da cerebral bawo. Ayyuka na na gani jijiya ne a watsa daga jijiyar, samu lokacin da fallasa su daban-daban haske samuwar kasashe daga ido duka su na gani cibiyar kwakwalwa bawo.

Na gani Dukkan jijiyar: Structure.

Jijiya zaruruwa na akan tantanin ido ne a hade a cikin daya na gani jijiya. Ya kunshi hudu sassan: intraocular, vnutrikanaltsevoy, intraorbital da intracranial. A intraocular rabu ne Disc tare da diamita na game da 1.5 mm. A orbital rabo yana da tsawon game da 3 cm. A na gani jijiya yana da tsawon 5-6 mm a cikin kashi canal da kuma 4-17 mm a intracranial tashar.

Location jijiya endings a fannoni daban daban na akan tantanin ido da aka gina a kan wani tsarin. Saboda haka, a lokacin da gabatowa da Disc, da jijiya fiber Layer yana da babban kauri, da jijiya zaruruwa a cikin Disc sun himmantu a dama kusassari, kafa rabu intraocular na gani jijiya.

A na gani jijiya farawa daga faifai, da kuma aka kawo karshen a cikin chiasm. A na gani jijiya a cikin balagaggu yana da tsawon 35 zuwa 55 mm. An rufe uku meninges: wuya, taushi da kuma arachnoid. A sarari tsakanin bawo mai cike da musamman ruwa tare da wani hadadden abun da ke ciki.

Na gani zaruruwa daga duka idanu suna located a cikin girman kwanyar rami, wanda suna da alaka a sella. Wajen da su tare ne ake kira chiasm. Yana partially rarraba da zare na gani. Intersecting zaruruwa ne batun wadanda cewa fãra daga ciki sassa na akan tantanin ido. Wadannan intersections ne da muhimmanci sosai ga daidai ganewar asali da wasu cututtuka. Bayan tsallaka da na gani yankuna suna kafa wanda a tushe na kwakwalwa kara wucewa a kusa da shi da kuma karshen a crankshaft gawarwakin quadrigemina gaban da a raya yankin na thalamus. Geniculate jikin su ne mafi muhimmanci a cikin riwayar hasken dake fitowa da na gani bawo. Wadanda zaruruwa wanda ƙarasa a cikin thalamus, za'ayi reflex tsari na visceral da somatic reflexes. A gaban quadrigeminal gawarwakin amfani ga canja wuri na ƴan reflexes. Na gani zaruruwa wuce zuwa nuclei na oculomotor jijiya, a matsayin wani ɓangare na abin da suke shiga cikin ido, sakamakon tsokoki na Iris.

Matakai na pathological hali, wanda ci gaba a cikin na gani jijiya, da dangantaka ta kusa da tsarinta. Saboda da manyan yawan capillaries cewa suna kunshe a cikin partitions da kuma kewaye da na gani jijiya, kazalika da ƙara ji na ƙwarai to gubobi, da yanayi na mai guba effects a kan na gani jijiyoyi, da kuma cututtuka. Tare da karuwa a intraocular matsa lamba mafi m ma'ana zama da Disc, inda a glaucoma shi ne guga man da kuma kafa fossa. High intracranial matsa lamba rike ruwa outflow a Inter-sarari, sakamakon jijiya matsawa da kuma kumburi žunsa interstitial abu.

A CD ma da detrimental mummunan tasiri na hydrodynamic da hemodynamic canje-canje da kai ga wani karu a intraocular matsa lamba. Duk wani canje-canje a cikin na gani jijiya ko da yaushe kai ga tabarbarewa na gefe ko tsakiyar hangen nesa, yayin da a can iya zama tabarbarewar magariba, hangen nesa da kuma launi da bambance-bambance. Cututtuka alaka da na gani jijiya, suna degenerative, kumburi ko rashin lafiyan a yanayi. Wani lokaci akwai marurai munanan a ci gaba da kuma tsarin da na gani jijiya.