Video: Dab tsi yog peb lub tshuab tsis muaj tshuaj lom neeg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
1 Teb. Cov peb lub tshuab tsis tseem ceeb ntawm peb lub cev yog carbonic acid bicarbonate tsis system , phosphate tsis system thiab protein tsis system.
Nyob rau hauv no hais txog, dab tsi yog lub chemical buffer system?
A tsis pub yog a tshuaj system uas tiv thaiv ib tug radical hloov nyob rau hauv kua pH los ntawm dampening qhov kev hloov nyob rau hauv hydrogen ion concentrations nyob rau hauv cov ntaub ntawv ntawm ntau tshaj acid los yog puag. Feem ntau, cov khoom uas nqus cov ions yog cov kua qaub uas tsis muaj zog, uas siv cov hydroxyl ions, lossis lub hauv paus tsis muaj zog, uas siv cov hydrogen ions.
Tsis tas li ntawd, ob lub physiological tsis nyob rau hauv lub cev yog dab tsi? Cov tsis system Kev ua haujlwm hauv cov ntshav plasma suav nrog cov ntshav plasma proteins, phosphate, thiab bicarbonate thiab carbonic acid. buffers . Lub raum pab tswj cov kua qaub-puag sib npaug los ntawm kev tso tawm hydrogen ions thiab tsim bicarbonate uas pab tswj cov ntshav plasma pH nyob rau hauv ib txwm muaj.
Yog li ntawd, dab tsi yog lub ntsiab chemical buffers ntawm lub cev?
Lub cev cov tshuaj tsis muaj zog muaj peb tus kheej buffers: carbonate / carbonic acid buffer, phosphate buffer thiab buffering ntawm plasma cov proteins . Thaum qhov thib peb tsis yog qhov ntau tshaj plaws, thawj feem ntau suav hais tias yog qhov tseem ceeb tshaj plaws txij li nws tau ua ke rau hauv kev ua pa.
Peb lub tswv yim tseem ceeb ntawm kev tswj pH yog dab tsi?
Muaj peb mechanisms uas ploj lawm pH hloov hauv lub cev kua: buffers; ua pa; lub raum. (a) Cov protein yog qhov tseem ceeb tshaj plaws hauv lub cev. Lawv feem ntau yog intracellular thiab suav nrog hemoglobin.
Pom zoo:
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