![Vim li cas cov leeg nqaij xav tau oxygen? Vim li cas cov leeg nqaij xav tau oxygen?](https://i.answers-medical.com/preview/medical-health/13893068-why-does-cardiac-muscle-need-oxygen-j.webp)
Video: Vim li cas cov leeg nqaij xav tau oxygen?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Koj leeg nqaij xav tau nws tus kheej muab ntshav vim, zoo li tag nrho koj lub cev, nws xav tau cov pa thiab lwm yam khoom noj kom nyob zoo. Vim li no, koj plawv twj cov pa -nplua nuj cov ntshav rau nws tus kheej nqaij los ntawm koj cov hlab plawv. Ua kom cov ntshav ntws zoo.
Ib yam nkaus, lub plawv nqaij nkag nrog oxygen li cas?
Cov leeg nqaij , zoo li txhua lub cev lossis ntaub so ntswg hauv koj lub cev, xav tau cov pa -nplua nuj cov ntshav kom muaj sia nyob. Ntshav yog muab rau plawv los ntawm nws tus kheej cov hlab ntshav, hu ua kev ncig ntshav. Cov kab mob plawv no tawm mus rau hauv cov hlab ntsha me, uas muab cov pa -nplua nuj cov ntshav rau tag nrho leeg nqaij.
Qhov thib ob, qhov tsis muaj oxygen rau lub plawv txhais li cas? Angina tshwm sim los ntawm kev txo cov ntshav ntws mus rau koj plawv nqaij. Koj cov ntshav nqa cov pa , koj e plawv nqaij yuav tsum muaj sia nyob. Thaum koj plawv nqaij tsis txaus cov pa , nws ua rau muaj mob hu ua ischemia. Feem ntau ua rau txo cov ntshav ntws mus rau koj plawv nqaij leeg yog kab mob coronary artery (CAD).
Tsis tas li, ua li cas thaum lub plawv xav tau oxygen ntau dua?
Feem ntau, cov tsos mob no xws li mob hauv siab, ua tsis taus pa ntawm kev ua haujlwm, thiab diaphoresis, tshwm sim thaum lub sijhawm ua haujlwm lossis kev ntxhov siab thaum lub plawv xav tau oxygen ntau dua . Los ntawm kev ua kom tawm dag zog, tus neeg mob tau ua rau plawv txhawm rau nce nws tus nqi thiab kev cog lus yog li ua rau nce myocardial cov pa xav tau.
Lub plawv siv oxygen ntau npaum li cas?
Piv rau feem ntau cov kabmob hauv lub cev (saib cov lus hauv qab no), cov pa rho tawm ntawm plawv yog tus siab Cov cov pa rho tawm ntawm plawv feem ntau yog 10-12 vol % (ml O2/100 ml ntshav). Kev xav, qhov nyiaj ntau tshaj ntawm cov pa uas tuaj yeem rho tawm yog 20 vol %.
Pom zoo:
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Hemoglobin nrog khi cov pa roj carbon dioxide thiab hydrogen ions yog nqa nyob rau hauv cov ntshav rov qab mus rau lub ntsws, qhov uas nws tso cov hydrogen ions thiab carbon dioxide thiab rebinds oxygen. Yog li, hemoglobin pab thauj hydrogen ions thiab carbon dioxide ntxiv rau kev thauj oxygen
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Cov leeg: Vim li cas lawv thiaj tseem ceeb? Cov leeg thiab cov hlab ntsha tso cai rau peb txav peb lub cev. Lawv ua kom peb lub cev sab hauv ua haujlwm. Tib neeg lub cev muaj ntau dua 600 cov leeg, uas muaj li ntawm 40 feem pua ntawm peb lub cev hnyav
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Striated leeg nqaij yog cov nqaij leeg uas ua haujlwm rov ua haujlwm hu ua sarcomeres. Lub xub ntiag ntawm sarcomeres tshwm sim raws li cov kab uas pom pom ntawm cov leeg nqaij, uas yog lub luag haujlwm rau qhov tshwm sim zoo li pom hauv cov duab me me ntawm cov ntaub so ntswg
Vim li cas cov kab mob xav tau oxygen?
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Oxygen. Cov kab mob uas xav tau oxygen kom loj hlob yog hu ua obligate aerobic bacteria. Feem ntau, cov kab mob no xav tau oxygen kom loj hlob vim tias lawv txoj kev tsim hluav taws xob thiab kev ua pa yog nyob ntawm kev hloov ntawm electrons mus rau oxygen, uas yog qhov kawg ntawm electron txais hauv cov tshuaj tiv thaiv kev thauj mus los