MUBODILAI GAZ

MUBODILAI GAZ, nave az mubodilai moddaho bayni organizm va muhiti atrof. M. g. az oksigenro furu burda gazi karbonatro khorij kardani organizm iborat ast; furu burdani baze mahsuloti gazmonand va bugi ob niz mansub ba M. g. meboshad.
M. g. juzi avvalu okhiri silsilai aksulamali mubodilai moddaho va nerui organizm buda, faoliyati hayotii onro tamin mesozad. Mekhanizmi M. g. dar odam az nafas giriftan bo shush (mubodilai faoli gazhoro bayni havoi atmosferi va alveolavi, havoi alveolavi va khun tamin menamoyad), oksigenro payvast namuda ba boftaho rasondani khun, guzarishi oksigen az khun ba moei bayni boftaho va nafasgirii boftaho iborat ast. Ba hamin monand (faqat baraks) mubodilai gazi karbonat surat megirad.
Fishori parsialii oksigeni havo, ki alveolahoi shushro pur mekunad, ba 100 mm sut. simobi, shiddati on dar khuni venavi, ki ba shush jori meshavad, taqr. 40 mm sut. simobi ast. Dar natijai farqiyati fishori parsiali oksigen az alveolaho ba khun rafta, bo gemoglobini eritrositho payvast megardad, sipas vay az khun ba boftaho meguzarad va hamin tavr, ba silsilai ravandhoi mubodila dokhil meshavad.
Fishori parsialii gazi karbonat dar havoi alveolaho ba 40 mm sut. simobi, shiddati on dar khuni venavie, ki ba shush meravad, ba 48 mm sut. simobi barobar ast. Binobar farqiyati fishor gazi karbonat ba alveolaho meguzarad, vale gazi karbonati dar boftaho barziyod joydoshta, ba khun va sipas ba shush meravad. Ravandi M. g. muttasil idoma meyobad. Oid ba saviyai M. g. metavon az rui buzurgii ventilyatsiyai shush dar 1 daq. khulosa barovard. Dar mavridi orom nafas giriftan, dar 1 daq. az shush taqr. 8000 ml havo meguzarad. Hangomi kori purshiddati jismoni, shiddati ruhi va baze bemoriho ventilyatsiyai shush meafzoyad. Ikhtiloli M. g. – gipoksiya bemorii mamul buda, binobar norasoii havo rukh menamoyad.

F. A. SHukurov.