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Eritrositho va khunguzaroni

Sokht va vazifahoi eritrositho. Vazifai asosii eritrositho az uzvi nafaskashi ba tamomi hujayraho va boftahoi organizm kashonidani oksigen meboshad. Inchunin eritrositho dar dur kardani gazi duoksidi karbonat az boftaho niz ishtirok mekunand. Dar tarkibi eritrositho gemoglobin mavjud ast va surkhii khun ba on vobasta meboshad. Baroi hamin eritrosithoro hujayrahoi surkhi khun menomand.
Gemoglobin, dar navbati khud, az du qism: safedavi – «globin» va gayrisafedavi – «gemm» iborat ast. Gemoglobin dar shush ba osoni bo oksigen payvast meshavad va rangi in khun surkhi ravshan ast, khuni venagi boshad, doroi gazi karbon meboshad, binobarin rangash surkhi khira meshavad.

erotricit

Eritrosithoi khuni odam az du taraf furu khamida yo yaktarafa barjasta meshavand. Eritrosithoi odam andozai na on qadar kalon doshta, ba 7,5-8 mkm barobar ast. Miqdori eritrositho dar 1 mm3 yo 1 mikrolitr khun ba hisobi miyona 4,5-5 millionro tashkil medihad.
Eritrositho dar illiki surkhi ustukhon hosil shuda, qarib 120 ruz umr mebinand. Eritrositho dar ispurch va jigar zakhira meshavand va dar holati kam shudani miqdori khun dar organizm az in uzvho khun tavassuti rohhoi umumii khungard ba organizm doda meshavad.
Kamkhuni. Kamkhuni ba kam shudani miqdori eritrositho dar khun yo ba kam shudani miqdori gemoglobin va bazan ba hardui onho vobasta ast. Kamkhuni inchunin dar natijai ziyod talaf dodani khun niz paydo meshavad. Dar natijai bemorihoi siroyatkunanda, tasiri nurhoi radioaktivi magzi surkhi ustukhon vazifai khudro gum mekunad, ki sababi kamkhuni megardad. Kamkhuniro muolija kardan mumkin ast. Ba in pesh az hama khuroki sergizo, havoi toza ba barqaror shudani miqdori mutadili gemoglobini khun kumak
karda metavonand.
Hunguzaroni. Hangomi bemori yo talaf dodani khuni ziyod ba odamon khun meguzaronand. Hunro boshad, az donorho megirand. Huni giriftashudaro ba zarfhoi shishagin ba tavri germetiki mahkam karda nigoh medorand va baroi lakhta nashudani khun moddahoi makhsusi kimiyoviro istifoda mebarand.

Hunguzaroniro az rui guruhhoi khun muayyan kardan mumkin ast. Asosan chor guruhi khunro farq kardan mumkin ast. Baroi guzaronidani khun hatman ba guruhi khuni khungiranda va
khundihanda ahamiyat dodan lozim ast. Ham guruhi khuni onho va ham omilhoi rezusiashon boyad yakkhela boshand.
Har kas boyad guruhi khuni khudro donad. Guruhi khune, ki irsi meboshad, az padaru modar ba nasl, farzandon meguzarad. Onho doimi buda, dar davomi umr tagyir nameyoband. Qarib 35% aholii kurai zamin khunashon guruhi I buda, 36% guruhi II-um, 22% guruhi III-um, 7% guruhi IV-umro tashkil mekunad.

Savolho

1. Hunguzaroni chist?
2. Dar kadom holatho khun meguzaronand?
3. CHand guruhi khun mavjud ast?
4. Baroi chi guruhi khunro muayyan mekunand?

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