Window kulo ihlabathi. Izidumbu yendoda

Ulwazi ukwahluka ehlabathini igalelo izivamvo. Eyes zisinika alithoba ekhulwini lonke ulwazi ongenayo. Imizimba umntu ngokusondeleyo ukuze idityaniswe ebuchotsheni, ezo baphathiswa umsebenzi ophambili kunxibelewano luvo kunye nehlabathi ngaphandle. Izinto ngokuba ukukhanya-ethe inwebu iliso na zobuchopho ebuchotsheni. Imizimba umntu esebenzisa inxalenye peripheral yomfanekiso analyzer - ziiphotoreceptor. Njengoko umqhubi analyzer olubonakalayo usebenzisa lo luvo optic. Le ndlela esimbaxa kwangawo umbindi, nto leyo sijoliswe kwindawo ebonwayo nomhlehlo Occipital le neuron.

Ethetha amalungu mbono, zithetha ezo zinto ezingaphandle. Okokuqala, iperi amehlo (amehlo) kunye namaqumrhu ezisebenzela abancedisayo. Ezi ziquka iinkophe, iintshiyi, amashiya, nobubovu lacrimal kunye nezihlunu ocular. Ezi ezineziciko wesikhumba nezibaya, bonge iliso kunye noqhoqhoqho ivaliwe xa kuyimfuneko. Phezu engaphakathi kwenkulungwane na inwebu yangaphakathi ukuba ophthalmologists iingcali kuthiwa conjunctiva. Umsebenzi ongundoqo kwinkulungwane na ukuthambisa ajikeleze kule fluid iinyembezi iliso, kwakunye ukukhusela komhlaba ukusuka omiswe kunye neempembelelo mechanical. Ngokwesiqhelo umntu owenze ukuqhwanyazaemva kanye ngamnye kwimizuzwana emihlanu.

Ikratshi na ubuhle - amashiya - zimi kungqameko iinkophe, ukuba zicwangciswe 2-3 imiqolo, inani efikelela asibhozo. Besenza umsebenzi yokhuselo, belumkisa nxamnye ukuqhagamshelana kunye amasuntswana iliso isifo amazwe. A indima enkulu ekuqinisekiseni eqhelekileyo yokusebenza iliso lidlala indlala lacrimal. Le ibekwe ngaphandle kwikona engentla esweni. Yena usoloko narhoqo yakha eyodwa imfihlelo - slozu. umthamo Daily ifikelela 100 ml. Krazula ngokusebenzisa bile nasolacrimal gqolo ungenamandla kuloo ndawo ibinomthwebeba ngeempumlo. iinyembezi afakwe imele isisombululo 1.5 ekhulwini yetyuwa eqhelekileyo (NaCl), ebandakanya arhente esiluhlaza (lysozyme). Krazulani imisebenzi emininzi. Ngokuhlamba phezu lweliso lakho, ukuxovwa wayo nokhuselo evela amasuntswana amazwe kunye neentsholongwane kongezelelwa O imveliso kweziyobisi umsebenzi ingcinezelo luvo kunye emoyeni.

Zezigqeba yabantu sihamba rhoqo. Kuba uhambisa i amehlo kumkhawulela izihlunu iliso. Xa yokugcina iliso ebantwini, kukho imigca ezine iperi izihlunu elibhalwe ngokumileyo. yokufaka eqinisekisa ukusebenza yolunye ye nezamazembe olubonakalayo lweliso ngalinye, ukuba idibane phezu into, nto leyo ingqalelo.

Yeso yi lens yendalo ungqukuva ogama ubukhulu ufikelela iisentimitha emibini enesiqingatha. Zakhe ezintathu-umda ndizayo. Ebizwa ezinezikhondo engaphandle (tunica), i-avareji bafumana igama nemithambo kunye negama lwangaphakathi a photosensitive (retina).

Izidumbu zomntu yindlela entsonkothileyo yendalo, nto leyo eqhelekileyo yokusebenza kufuna unyango ngenyameko. Kanye njengokuba amalungu yokujikeleza yabantu, amehlo benza umsebenzi wabo umahluko omnye kuphela ukuba bathathe ikhefu omncinane ubuthongo yabantu, kodwa umsebenzi sawo inqanyulelwe, kodwa kuba "imo eco" kuphela.

Kuba ukusebenza eziqhelekileyo, iliso mayilandelwe ngqo lococeko umsebenzi olubonakalayo. Ezi ziquka esekungcoleni zokusebenza ixesha ukulayisha kunye namaxesha elifutshane iziphazamiso. Zakhiwo loqheliso ukuba avumela ukuba nje kuphela baqeqeshe kwaye sehlise izihlunu iliso, kodwa ukuze uzinzise umsebenzi lens kunye neenkqubo-luvo.

Ukunyamekela umbono yabo iya kuqinisekisa ukuba kukho ixesha elide ziya kuba kunandipha ngokupheleleyo iintlobo ngeentlobo imibala yehlabathi elisingqongileyo.