Wannan musamman na gani analyzer

Kayayyakin Analyzer - mafi hadaddun da dabara tsarin na ji na gani abubuwa. A dukan kyau na duniya, ta bore da launuka da tabarau mutum ne iya jin ta cikin jiki na kwakwalwa da kuma nan take ikon tara da ya kwarara na gani, haske bayanai da sauri bincika su. Kayayyakin Analyzer mutum - shi ne na gani hanya, ta hanyar abin da shiga cikin mutum kwakwalwa duk na gani bayanai. Yana ba ka damar gama da raga ido fata zuwa kwakwalwa Tsarin, su juya su a cikin wani har abada aiki inji.

A tsarin da na gani analyzer

A na gani hanya, kamar yadda muka gani a sama, ta fara da na gefe neurons wanda aka located in daban-daban yadudduka da haske a jikin dan Adam ido. Daga wadannan neuronal Kwayoyin suna da bakin ciki da kuma gaggautsa zaruruwa, ko axons, wanda ba su katse da kuma mika wa da ake kira ciki kwantena a kaikaice geniculate jiki. Wadannan axons ba a cikin kwakwalwa da aka ware da kuma guda tsararru, wanda aka wakilta na gani jijiya daga kowane ido. Kamar yadda wani ɓangare na kowane daga cikin na gani jijiya, ko n. opticus, akwai game da miliyan daya jijiya zaruruwa. Dukansu suna da cikakken daidai da yawan 'yan tsoka mai amsa sigina filayen da akan tantanin ido. Wannan hujja da shawara cewa, da na gani analyzer ne iya gane hasken dake fitowa daga kusan kowane kusurwa na akan tantanin ido inda photoreceptors suna located.

Sam n.opticus topographically kasu kashi hudu manyan ilimin Halittar Jiki ƙungiyoyin:

- vnutrigaznoy ko intraocularis,

- intraorbital ko interorbitalis,

- intraosseous (vnutrikanaltsevoy) ko intercostalis,

- intracranial ko intercranialis.

Irin wannan rabo ne mai muhimmanci a san aikatawa ophthalmologists, saboda shi za ta tallafa a halitta da su daidai ganewar asali da kuma Hasashen na gani aiki a shafi marasa lafiya a nan gaba. Kayayyakin Analyzer ne takamaiman da cewa kawai shi yana da wuya mararraba na jijiya zaruruwa da ake kira "chiasm". Jigon wannan chiasm ne cewa zaruruwa cewa wuce a cikin na gani jijiya, chiasm a farkon sosai a raba a irin wannan hanyar da bayan shi a cikin na gani fili ne fiber a matsayin dama da rabi na ido da kuma hagu.

Duk da haka, a cikin wannan musamman, wanda yana da na gani analyzer ba tare da karshen. Bayan na gani jijiya chiasm biyu zaruruwa samu kamar yadda aka ambata a sama, wani sunan - na gani fili. Dama na gani fili ne neperekreshchennymi axonal matakai dama na boko da rabi na akan tantanin ido na dama eyeball ya haye zaruruwa daga tsakiya, watau hanci, hagu da rabi na akan tantanin ido na eyeball. Haka kuma, a hagu fili za a iya lura hada neperekreshchennymi jijiya zaruruwa daga kaikaice da rabi na akan tantanin ido na hagu eyeball ya haye axonal matakai tsakiya da rabi na dama eyeball akan tantanin ido. Kuma hagu da kuma dama na gani fili aka aika zuwa subcortical cibiyoyin, alhakin da na gani abin mamaki. The girma na fiber ƙare a kaikaice geniculate jikinsu. Daga wadannan kwayoyin kwakwalwa Tsarin mika neurites, wanda ya samar da wani gungume Grazioli. Wannan katako, ko annuri kare a occipital lobe, waxanda suke da takamaiman gani filin. A cikinsu, kamar yadda masana kimiyya suka yi ĩmãni, kuma akwai dukan tsari na gani kayan aiki. A kudi na wadannan halayen, nauyi wajibi, nawa to 'yan tenths ko hundredths na biyu ne. Lokacin - kuma wani mutum san kuma ya fahimci abin da lokacin da za a "fada" a wancan lokacin ya yawo idanu dan kadan. Wannan na musamman Tantancewar tsarin da kuma irin wannan muhimmanci azanci shine zuciya da sauransu, kamar yadda sashin jiki na gani. Wannan hangen nesa da ba mutane a mafi yawan bayanai fiye da kowane ji sashin jiki.