![Tus nqi ntawm lub plawv yog dab tsi? Tus nqi ntawm lub plawv yog dab tsi?](https://i.answers-medical.com/preview/medical-health/13980665-what-is-the-intrinsic-rate-of-the-heart-j.webp)
Video: Tus nqi ntawm lub plawv yog dab tsi?
![Video: Tus nqi ntawm lub plawv yog dab tsi? Video: Tus nqi ntawm lub plawv yog dab tsi?](https://i.ytimg.com/vi/tfE3aeXPOiY/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Lub plawv dhia yog txhais raws li tus tus nqi ntawm qhov twg plawv ntaus thaum txhua lub plawv neural thiab hormonal inputs raug tshem tawm.
Thiab cov lus nug yog, dab tsi yog qhov intrinsic tus nqi ntawm cov pacemakers sib txawv ntawm lub plawv?
Hauv kev muaj tiag, cov plawv muaj ob peb cov pacemakers lub npe hu ua autonomic foci, txhua qhov hluav taws kub ntawm nws tus kheej tus nqi ntawm tus kheej SA node: 60-100 bpm. Atrial foci: 60-80 bpm Qhov siab tshaj plaws: 40-60bpm.
Tsis tas li ntawd, dab tsi tswj tus nqi ntawm lub plawv? Lub plawv dhia yog tswj los ntawm ob ceg ntawm autonomic (involuntary) paj hlwb. Lub sympathetic nervous system (SNS) thiab parasympathetic paj hlwb (PNS). Lub paj hlwb (sympathetic nervous system) (SNS) tso cov tshuaj hormones (catecholamines - epinephrine thiab norepinephrine) kom nrawm plawv dhia.
Nyob rau hauv no txoj kev, dab tsi yog intrinsic tus nqi ntawm AV node?
Cov AV node li qub sab hauv tua tus nqi tsis muaj stimulation (xws li uas los ntawm SA ntawm ) yog 40-60 zaug / feeb. Cov cuab yeej no yog qhov tseem ceeb vim tias poob ntawm cov txheej txheem ua ntej ua ntej AV node tseem yuav ua rau pacing ntawm ventricles los ntawm - qeeb - pacemaking peev xwm ntawm lub AV node.
Dab tsi yog qhov intrinsic conduction system ntawm lub plawv?
Cov intrinsic conduction system ntawm lub plawv yog tsim los ntawm ntau qhov tshwj xeeb subpopulations ntawm cov hlwb uas yog spontaneously tsim hluav taws xob kev ua si (pacemaker hlwb), los yog nyiam ua qhov no excitation thoob plaws hauv lub plaub chambers. plawv hauv kev sib koom tes.
Pom zoo:
Lub plawv plawv twg tsim lub hauv paus ntawm lub plawv?
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Lub hauv paus ntawm lub plawv (sab nraub qaum): Nws tau tsim los ntawm sab laug atrium, uas yog plaub txoj hlab ntshav hlab ntshav. Nws nyob ntawm qhov ntxeev ntawm lub apex
Dab tsi yog cov txiaj ntsig ntawm kev cog qoob loo ntawm tus nqi ntawm cellular respiration hauv taum pauv?
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Qhov cuam tshuam ntawm germination ntawm tus nqi ntawm cell respiration nyob rau hauv peas yog hais tias nyob rau hauv peas yog germinated, tus nqi ntawm cell respiration yog siab dua vim hais tias cov hlwb loj hlob / mus los ntawm mitosis uas yuav tsum tau lub zog / ATP thiaj li yuav tsum tau nqa tawm uas yog generated. los ntawm cov txheej txheem ntawm kev ua pa ntawm tes
Lub plawv dhia ntawm tus me nyuam mos ntawm 12 lub lis piam yog dab tsi?
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Nws yog lub sijhawm zoo siab thiab zoo siab. Koj tus menyuam lub plawv dhia nrawm dua li tus neeg laus. Nws ntaus ntawm txog 150 neeg ntaus ib feeb! Thiab tseem muaj lwm qhov tseem ceeb: nyob ntawm 12 lub lis piam
Lub plawv dhia li qub ntawm tus me nyuam hauv plab thaum 11 lub lis piam yog dab tsi?
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Tus menyuam lub plawv dhia ob zaug nrawm dua li koj li, nyob qhov twg ntawm 120 txog 140 tus neeg ntaus ib feeb
Lub luag haujlwm ntawm tus kws saib xyuas mob plawv tsis ua haujlwm yog dab tsi hauv kev saib xyuas cov neeg mob plawv tsis ua haujlwm?
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Raws li ib feem ntawm pab pawg, tus kws kho mob lub plawv tsis ua haujlwm tau zoo muab rau muab kev pabcuam rau cov neeg mob thoob plaws txoj kev mob plawv tsis ua haujlwm thiab qhov no yuav tsum muaj kev koom tes ze nrog kws saib xyuas mob hauv thaj chaw tshwj xeeb tshwj xeeb xws li chav kho mob xwm txheej ceev thiab kev kho mob dav/ saib xyuas-ntawm-tus-neeg laus