Video: Vim li cas hemoglobin nkhaus sigmoidal?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Hemoglobin 's oxygen-binding nkhaus cov ntaub ntawv hauv cov duab ntawm a sigmoidal nkhaus . Qhov no yog vim muaj kev koom tes ntawm cov hemoglobin cov . Ob qho kev hloov pauv no ua rau hemoglobin poob nws affinity rau oxygen, yog li ua rau nws tso cov pa oxygen rau hauv cov ntaub so ntswg.
Ntawm no, vim li cas cov pa oxygen hemoglobin nkhaus nkhaus yog sigmoid zoo?
Sigmoidal zoo A hemoglobin cov molecule tuaj yeem khi mus txog plaub oxygen molecules nyob rau hauv ib tug reversible txoj kev. Cov puab ntawm nkhaus cov txiaj ntsig los ntawm kev sib cuam tshuam ntawm kev khi oxygen molecules nrog cov khoom molecules. Kev khi ntawm thawj molecule yog qhov nyuaj. Li no lub nkhaus muaj a sigmoidal los yog S- puab.
Tsis tas li, dab tsi ua rau sab laug hloov hauv oxyhemoglobin nkhaus? Tus qauv nkhaus yog hloov mus rau sab xis los ntawm qhov kub nce, 2, 3-DPG, lossis PCO2, los yog txo pH. Cov nkhaus yog hloov mus rau sab laug los ntawm qhov tsis sib xws ntawm cov xwm txheej no. Ib txoj cai ua haujlwm , los ntawm kev txhais, ua ib tug txo nyob rau hauv affinity ntawm hemoglobin cov rau oxygen.
Ib tug kuj yuav nug, vim li cas qhov nkhaus rau myoglobin tsis sigmoidal?
Muaj qhov sib txawv ntawm cov pa oxygen dissociation nkhaus rau myoglobin thiab hemoglobin. Yog li ntawd, kev sib cais nkhaus rau myoglobin yuav tsis muaj a ua sigmoidal duab Qhov no txhais tau tias kev sib raug zoo ntawm myoglobin cov rau oxygen yuav ntau dua li hemoglobin kev sib raug zoo rau cov pa.
Dab tsi yog qhov oxyhemoglobin dissociation nkhaus qhia peb?
Cov oxyhemoglobin dissociation nkhaus (OHDC) qhia txog kev sib raug zoo ntawm oxygen saturation ntawm hemoglobin (Soj2) thiab ib nrab siab ntawm cov hlab ntsha oxygen (Pao2). Nws indirectly qhia arterial hemoglobin saturation, ntsuas raws li oxygen saturation los ntawm mem tes oximetry (Spo2).
Pom zoo:
Vim li cas cov plaub muag loj hlob nkhaus?
Tab sis qee zaum, lawv loj hlob tsis raug. Qhov no yog ib yam mob hu ua trichiasis. Tias yog thaum koj cov plaub muag tig sab hauv ntawm koj lub qhov muag. Lawv tuaj yeem rub tawm ntawm koj lub qhov muag thiab ua teeb meem
4 yam nkhaus nkhaus ntawm tus nqaj qaum yog dab tsi?
Cov pob txha no, hu ua vertebrae, tau muab faib ua tsib thaj chaw: ncauj tsev menyuam, thoracic, lumbar, sacral, thiab coccyx. Txawm hais tias tus nqaj qaum ua rau peb sawv ntsug ncaj, tus qauv yog dab tsi tab sis. Muaj tiag peb qhov nkhaus nkhaus ntawm tus nqaj qaum (plaub yog tias koj suav tus pob tw)
Vim li cas ib tug neeg uas tsis hnov lus zoo yuav hnov qhov nkhaus ntawm cov pob txha ntev dua?
Feem ntau, ib tus yuav muaj cua ntau dua li kev nqa pob txha thiab yog li ntawd hnov qhov kev co ntev dua nrog rab diav rawg hauv huab cua. Yog hais tias cov pob txha conduction zoo ib yam los yog ntau tshaj qhov cua conduction, muaj ib tug conductive tsis hnov lus nyob rau sab ntawd
Qhov kev hloov pauv twg yuav ua rau hloov mus rau sab laug hauv cov pa oxygen hemoglobin khi nkhaus?
Cov pa -hemoglobin kev sib cais sib cais tuaj yeem txav chaw xws li qhov kev sib raug zoo rau cov pa oxygen tau hloov pauv. Cov yam ntxwv uas hloov qhov nkhaus muaj xws li kev hloov pauv hauv cov pa roj carbon dioxide concentration, ntshav kub, ntshav pH, thiab cov concentration ntawm 2,3-diphosphoglycerate (2,3-DPG)
Dab tsi cuam tshuam rau oxygen hemoglobin saturation dissociation nkhaus?
Thaum muaj cov pa roj carbon dioxide yaj, pH ntawm cov ntshav hloov pauv; qhov no ua rau lwm qhov hloov pauv hauv cov duab ntawm hemoglobin, uas ua rau nws muaj peev xwm khi cov pa roj carbon dioxide thiab txo nws lub peev xwm los khi cov pa oxygen