Ingcindezi oncotic

Ngokwazo ingcindezi oncotic (it has osmotic efanayo) - compounds ukuthi chaza izici kumiswa igazi plasma. Nge nokushoda namaprotheni emzimbeni is lehla, okungase kuholele ekubeni uthunyelelwe yokuthi ngenxa ekuqongeleleni edema uketshezi uzoqala ukuvela. Lokhu kungenxa yokuthi izindonga ulwelwesi isitsha kukhona ayevumela futhi semipermeable. Ziyakwazi kahle futhi ngokukhululekile kudlule amanzi, kuyilapho ama-ion kanye molecule izinto ezahlukene - nakakhulu.

Jwayelekile ingcindezi oncotic imayelana 7.5 atm. (5700 mm HG noma 762 KPA). Umsebenzi luyehluka in the plasma esifundeni 290 mOsm / l.

Nokho, osmotic wegazi ulinganiswa hhayi ubuningi zishintshe kakhulu ziyoncibilika, gxilisa ingqondo yabo. Iningi ion plasma (mayelana 99,5%) kukhona ion wezinto ezingaphili, ama lokuhlushwa okuyinto kuncike ingcindezi oncotic. Yokucindezela amaprotheni oketshezi olungenambala olusegazini kuphela ingxenye encane zonke 0.03-0.04 atm. (25-30 mm HG). Kodwa kuwufanele ukukhumbula ukuthi ukucindezela kwendikimba amaprotheni udlala indima ebalulekile ukusatshalaliswa kwamanzi phakathi plasma bese kwezicubu main.

Le ngxenye inqubo futhi ucabangele ukuhlonza ingcindezi oncotic. iqhaza lakhe ekusakazeni amanzi kuboniswa iqiniso lokuthi izindonga capillary ikakhulu esingaweleki amaprotheni. I-interstitial amaprotheni uketshezi oluncane kakhulu ngakho lokuhlushwa umyela yabo etholwe nhlangothi zombili we capillary.

Ngenxa okusezingeni eliphezulu oncotic ingcindezi uketshezi esikhaleni intercellular akusho buthelela, futhi ujikeleza.

Ngokuba nokuvimbela ingcindezi oncotic Kunconywa ekwelapheni preeclampsia, okuyinto mikhulu-ukuze umphumela ngeke bathathe isikhathi eside. Nge amaprotheni evamile igazi ekunqandeni kujwayeleke kuwo, avumele ukunciphisa ingozi yesifo senhliziyo.

Oncotic blood pressure ngokuvamile agcinwe ezingeni njalo. Esikhathini sawo sokuphila isiqondiso neurohumoral iqhaza izitho excretory ezifana umjuluko nezindlala , nezinso. Nciphisa noma ukwandisa ingcindezi oncotic beqonda azungeze izindonga umkhumbi ingxenye emaphakathi (hypothalamus) lapho ama-hormone antidiuretic ikhishwe esithinta inqubo ukumuncwa eziteshini izinso. Umsebenzi wayo ukulawula umchamo kumiswa inqubo. Ukuzinza ingcindezi osmotic ukunikeza ADN, aldosterone, parathormone, urenichesky i-hormone inhliziyo.

Ngu reflex kwenzeka ukwaba izitho ukushintsha imisebenzi noma okuholela ukubambezeleka ngokweqile, noma ukulahlekelwa okungazelelwe uketshezi kanye nosawoti emzimbeni. Kulezi izinqubo, owokuqala indima evelele uya amaprotheni (ingcindezi oncotic) ekwazi ukuhlanganisa nokuhlukanisa ukukhululwa ion. Ngokusebenzisa imisebenzi izitho excreting (izinso nomjuluko nezindlala), imikhiqizo umzimba, okuyinto ngokuqhubekayo kwakhiwa emzimbeni, iningi lazo akudingeki nomthelela ongemuhle ingcindezi osmotic.

Ukungasebenzi oncotic ingcindezi ezingeni zihlangene ukungalingani wenani amaprotheni oketshezi olungenambala olusegazini albumins globulin, anions, cations, sodium, i-potassium, i-calcium nezinye izakhi. Lokhu kungase kubangelwe izimo ezihlukahlukene sokugembula nezifo (ukudakwa, ukusha, ngemva kwezikhathi zokulotshwa-op, ukushaqeka, ukopha, izifo ezihlukahlukene, nokunye okunjalo). Ezimweni ezinjalo, ukuhlola umfutho oncotic kubaluleke kakhulu njalo. Treatment ngokuyinhloko aqondiswe ohlangeni kokukhipha isifo eyisisekelo kanye nokubuyiselwa ibhalansi nosawoti oketshezini olungenambala lwegazi. Nokho, ngaphambi kokuba aphathe ingcindezi, oncotic ikakhulukazi, qiniseka bonana nodokotela wakho kuqala. Musa self-medicate!