Amazing yabantu eye: Ulwakhiwo kunye Function

Iliso lomntu, isakhiwo apho esiza kuxubusha ngayo kweli nqaku, akukho nto kuthelekiswa kwisipili komphefumlo! ubuhle babo eside izigidi elisongiweyo bacule, imibongo namabali. Ukususela kwiminyaka ukuya kwiminyaka ingqalelo amehlo ukuba kuhlangene kunye emphefumlweni wabantu. Nkqu izazinzulu onolwazi abayaziyo ngokuzibonela yintoni na umbono wethu, ayiyeki mangaza yena kule mini, ebiza lo matshini ngummangaliso wendalo!

esweni kwabantu. isakhiwo

Amehlo ethu basoloko kakhulu xa kuthelekiswa ikhamera. Kwaye ngenene, apha naphaya ukugubungela (inwebu) kanye lens (ilens lakhe), kunye umngxuma (iris), yaye ukukhanya-onovakalelo umboniso (retina). Ubume iliso womntu, umfanekiso ogama eqhotyoshelweyo, isixelela elandelayo.

Ngaphandle, yeso yethu i imilo mgaqweni ngebhola. Kuyinto indawo yokuhlala ekhuselekileyo xa neziseko ahambelanayo intamo. Ilungu ngokwayo iqulathe amacandelo oluncedisayo (amalungu lacrimal, Neenkophe, conjunctiva, oculomotor izihlunu) kunye ekuthiwa-unit enombala (i uburharha zolwelo, inwebu, umzimba vitreous, ilens, amagumbi ngomva kunye cipande).

Iliso lomntu, ubume nguwuphi na uhlobo olunzima kakhulu, isiciko aphambili kunye iinkophe asezantsi. Ngaphandle kokuba zizele eluswini, yaye ngaphakathi - le conjunctiva (iqokobhe thinnest umanzi). Kubalulekile ukuphawula ukuba ngonaphakade kwaye ziqulathe amadlala iinyembezi ekhethekileyo yokunyakamisa inwebu kwiinwebu esweni.

Ukutyabeka engaphandle iso

Ibizwa-ebizwa ngoko sclera (eye protein), inxalenye elingaphambili zibonakale ngokusebenzisa conjunctiva ngaphaya. Sclera singena inwebu, ngaphandle apho akusayi kubakho iliso babantu.

Ubume inwebu

Eli lelona khaxa yelungu yethu ebonakalayo. Ngokomfanekiso, le yi "njongo" wethu, iwindow yethu ehlabathini izivamvo ezibonwayo!

iris

Olu hlobo umngxuma, esemva inwebu ngaphaya. Ngaphandle kokuba tonyusenkaya plenochka ukuba umbala ethile (omdaka, ongwevu, nemisonto emsi, eluhlaza, njalo njalo).

umfundi

Xa iziko walo umngxuma ngeenxa emnyama. Lo mfundi. Ngalo udlule zonke imisebe kuwa phezu retina. Kule ndawo ye Umfundi lens. Le lens abayinqobo lenticular, nto leyo babandakanyeke yokuhlala iso.

Ubume retina kwabantu

Ngokwemvelo awo kakhulu kunene ngathi ingqondo yethu. Ngokomfanekiso, yinto uhlobo window kwi ebuchotsheni. Ngokwangaphandle, kufana ipleyiti ebandakanya lamanqanaba 10 iiseli. Retina iliso sikhanya. Alithandabuzeki elokuba, ukuba umaleko ibalulekileyo ziiphotoreceptor, kuquka iintonga ekuthiwa-neziqina.

Ibhumbulu banoxanduva ndikho ebusweni bethu kude, kwaye iintonga zinika kwimida ethile. Kubalulekile ukuphawula ukuba zombini cone iintonga zibe ngasemva kwiretina. Ngoko ke, ukukhanya kuvela ngaphandle, kufuneka nakanjani kudlula omnye oomaleko, ushukumisa kubo.

Kwaye ekugqibeleni,

Ubume kwamehlo ethu nzima kangaka, yaye organ ulula yaye ubuncwane ukuba inkqubo olubonakalayo ngokwayo akukho nto ifana ngummangaliso wokwenene!