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Video: Dab tsi yog tag nrho lossis tsis muaj lus teb hauv cov leeg?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov tag nrho-los-tsis muaj law yog a txoj cai hais tias lub zog ntawm a lus teb ntawm lub paj hlwb lossis cov leeg fiber tsis yog nyob ntawm qhov muaj zog ntawm qhov kev txhawb nqa. Yog hais tias ib tug stimulus yog siab tshaj ib tug tej yam pib, paj hlwb los yog cov leeg fiber yuav hluav taws.
Hais txog qhov no, puas tag nrho cov leeg muab tag nrho lossis tsis teb?
Txhua-lossis-tsis muaj txoj cai Cov tag nrho-los-tsis muaj law yog txoj cai tias lub zog los ntawm cov hlab ntsha los yog cov leeg fiber teb rau qhov kev txhawb siab yog ywj siab ntawm lub zog ntawm qhov kev txhawb zog. Yog hais tias qhov stimulus tshaj qhov pib muaj peev xwm, cov hlab ntsha los yog cov leeg fiber ntau yuav muab ib qho tiav lus teb ; txwv tsis pub, tsis muaj lus teb.
Kuj Paub, yuav ua li cas tag nrho lossis tsis muaj txoj cai siv rau kev ua haujlwm lub plawv li qub? Lub myocardium ( plawv raws li ib tug tag nrho) ntaus raws li ib tug unit raws li ntev raws li lub intrinsic conduction system yog operative thiab lub plawv cov leeg noj qab nyob zoo. Tus nqi thiab lub zog ntawm plawv contractions yog nce tab sis cov qauv hluav taws xob tam sim no qhov siab tseem tsis hloov.
Raws li, vim li cas thiaj li muaj peev xwm nqis tes ua tag nrho lossis tsis teb?
Tsis muaj qhov loj lossis me muaj peev xwm nqis tes ua hauv ib lub xovtooj ntawm tes - txhua qhov peev xwm ua yog tib yam loj. Yog li ntawd, lub neuron ib txwm tsis mus txog qhov pib lossis tag nrho peev xwm ua raug rho tawm - qhov no yog qhov " TAG NRHO LOSSIS Tsis muaj "txoj cai. Tej yam peev xwm ua tau yog tshwm sim thaum sib txawv ions hla lub neuron membrane.
Leej twg tau npaj tag nrho lossis tsis muaj hauv kev kawm?
Txhua-lossis-tsis muaj txoj cai lij choj, lub hauv paus ntsiab lus ntawm lub cev uas cuam tshuam cov lus teb rau stimulus hauv cov ntaub so ntswg excitable. Nws yog thawj zaug tsim los rau kev cog lus ntawm cov leeg nqaij los ntawm American physiologist Henry P. Bowditch hauv 1871.
Pom zoo:
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Daim Npav Lub Sij Hawm Ntshav Ntshav Cov ntshav ntws los ntawm lub cev Lub Sijhawm Hematocrit Txhais Cov feem pua ntawm tag nrho cov ntshav ntim los ntawm cov xov tooj ntawm tes Lub Sij Hawm Hemoglobin Cov Lus Txhais Nyiaj rau ntau dua 95% ntawm RBC cov protein hauv lub cev; lub luag haujlwm ntawm tes muaj peev xwm thauj
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Lub ntsiab lus 3 lus tsis sib xws hauv lus Spanish yav dhau los tsis zoo yog ser (yuav tsum), ir (mus) thiab ver (kom pom). Lwm qhov lus qhia tsis xwm yeem uas zoo li yog ib ntawm peb lub ntsiab tab sis nrog ua ntej yog ua ntej (ua ntej)
Puas yog cov leeg mob ua raws tag nrho lossis tsis muaj cai?
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Tag nrho lossis tsis muaj txoj cai lij choj yog lub hauv paus ntsiab lus uas hais tias lub zog los ntawm cov leeg nqaij fiber ntau teb rau qhov kev txhawb nqa yog ywj siab ntawm lub zog ntawm qhov stimulus. Whereas lub plawv nqaij innervation yog tas mus li thiab tag nrho cov leeg ua raws li ib tug unit. Yog li tag nrho cov leeg mob plawv siv tau rau txhua tus lossis tsis muaj cai
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Cov hlab ntsha ua ib feem ntawm lub circulatory system. Cov hlab ntsha nqa cov ntshav oxygenated tawm ntawm lub plawv mus rau cov ntaub so ntswg, tshwj tsis yog cov hlab ntshav hauv lub ntsws, uas nqa ntshav mus rau lub ntsws rau cov pa oxygen (feem ntau cov leeg ntshav nqa cov ntshav deoxygenated mus rau lub plawv tab sis cov leeg hauv ntsws nqa cov ntshav oxygenated ib yam)
Dab tsi yog lo lus rau ib tus neeg muaj tshuaj lom uas ua rau muaj kev puas tsuaj lossis kev yug me nyuam hauv lub fetus lossis embryo?
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Teratology. Teratogens yog cov khoom uas yuav ua rau yug me nyuam tsis xws luag los ntawm kev cuam tshuam rau embryo lossis fetus