Video: Lub luag haujlwm ntawm sodium potassium twj tso kua mis yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov sodium poov tshuaj twj tso kua mis (NaK twj ) yog qhov tseem ceeb heev rau ntau lub cev, xws li paj hlwb signaling, lub plawv contractions, thiab raum. muaj nuj nqi . The NaK twj yog ib hom kev thauj khoom tshwj xeeb uas pom muaj nyob hauv koj cov cell membranes. NaK twj tso kua mis muaj nuj nqi los tsim ib tug gradient ntawm Na thiab K ions.
Ib yam li ntawd ib tug yuav nug, dab tsi yog lub luag haujlwm ntawm Na + / K + twj tso kua mis?
Sodium-potassium twj tso kua mis yog ib qho antiporter thauj protein. Lub twj tso kua mis no yog lub luag haujlwm rau kev siv yuav luag 30% ntawm lub cev ATP, qhov no yog vim 1 molecule ntawm ATP raug hydrolysed li peb molecules ntawm Na.+ yog pumped tawm ntawm lub cell thiab ob lub molecules ntawm K+ yog pumped rau hauv cell.
Tsis tas li ntawd, lub luag haujlwm ntawm sodium poov tshuaj twj tso kua mis yog dab tsi hauv kev tswj xyuas cov ntaub so ntswg muaj peev xwm? Sodium - poov tshuaj twj tso kua mis txav ob poov tshuaj ions hauv cell li peb sodium ions tau muab tso rau hauv tswj tus nqi tsis zoo daim nyias nyias nyob rau hauv lub cell; qhov no pab tswj tus so peev xwm.
Ib tug kuj yuav nug, yog vim li cas sodium poov tshuaj twj tso kua mis tseem ceeb heev rau tib neeg lub cev?
Cov sodium - poov tshuaj twj tso kua mis yog ib qho tseem ceeb hauv kev tswj cov acid-base tshuav nyiaj li cas raws li zoo raws li nyob rau hauv lub raum noj qab nyob zoo. Lub zog no yog siv los tshem tawm cov kua qaub los ntawm lub cev lub cev . Cov sodium - poov tshuaj twj tso kua mis kuj tseem ua haujlwm los tswj cov nqi hluav taws xob hauv lub cell. Qhov no yog tshwj xeeb tseem ceeb rau cov leeg nqaij thiab paj hlwb.
Yuav ua li cas yog tias lub twj tso kua mis sodium tsis ua haujlwm?
Qhov inhibition ntawm cov Na /K twj yuav tso cai Na Cov ions mus rau hauv lub cell, raws li K ion yuav poob. Yog li os Na /K twj tau inhibited thiab tsis ua haujlwm, ces ntau yam teeb meem ua haujlwm yuav tshwm sim hauv cell. Na ion concentration yuav sau nyob rau hauv lub cell thiab intracellular K ion concentration poob.
Pom zoo:
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