![Dab tsi yog lub hauv paus ntawm ATP rau cov leeg nqaij contraction? Dab tsi yog lub hauv paus ntawm ATP rau cov leeg nqaij contraction?](https://i.answers-medical.com/preview/medical-health/14124001-what-is-the-source-of-atp-for-cardiac-muscle-contraction-j.webp)
Video: Dab tsi yog lub hauv paus ntawm ATP rau cov leeg nqaij contraction?
![Video: Dab tsi yog lub hauv paus ntawm ATP rau cov leeg nqaij contraction? Video: Dab tsi yog lub hauv paus ntawm ATP rau cov leeg nqaij contraction?](https://i.ytimg.com/vi/oTKoYZtS3XM/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Calcium prolongs lub sijhawm ntawm nqaij cell depolarization ua ntej repolarization tshwm sim. Kev cog lus hauv mob plawv tshwm sim vim yog kev khi ntawm myosin taub hau rau adenosine triphosphate ( ATP ), uas tom qab ntawd rub cov actin filaments mus rau hauv nruab nrab ntawm sarcomere, cov cuab yeej siv zog ntawm kev cog lus.
Thiaj li, dab tsi yog lub hauv paus tseem ceeb ntawm lub zog rau cov leeg nqaij?
Fatty acids yog cov lub plawv tseem ceeb roj, txawm hais tias ketone lub cev thiab lactate tuaj yeem ua roj rau lub plawv mob.
leeg nqaij ua los ntawm dab tsi? Nws yog muaj los ntawm tus kheej lub plawv mob hlwb (cardiomyocytes) koom ua ke los ntawm cov discs sib xyaw, kaw los ntawm collagen fibers thiab lwm yam tshuaj uas tsim cov txheej txheem sab nrauv. Cov leeg nqaij cog lus zoo ib yam li cov pob txha nqaij , txawm hais tias muaj qee qhov sib txawv tseem ceeb.
Tom qab ntawd, lo lus nug yog, dab tsi yog lub luag haujlwm rau kev cog lus ntawm cov leeg nqaij plawv?
Lub tuab nruab nrab txheej ntawm lub plawv , myocardium, yog tsim los ntawm mob plawv cell thiab yog lub luag haujlwm rau kev cog lus ntawm plawv chav.
Cov qauv dab tsi txuas rau tib neeg lub plawv cov leeg hlwb?
Intercalated discs
Pom zoo:
Lub sijhawm rau cov ntaub so ntswg dawb nyob ib ncig ntawm lub qhov muag thiab tsim lub hauv paus txheej txheem ntawm lub ntiaj teb yog dab tsi?
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Qhov muag. Cov ntaub so ntswg dawb nyob ib ncig ntawm lub qhov muag thiab ua lub hauv paus tseem ceeb ntawm lub ntiaj teb yog. iris, lub cev ciliary, choroid. Cov qauv ntawm cov kab mob uveal, lossis uvea, yog. dej lom zem
Dab tsi yog lub hauv paus tseem ceeb ntawm lub zog rau cov leeg mob plawv?
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Fatty acids yog lub plawv lub ntsiab ntawm cov roj, txawm hais tias ketone lub cev thiab lactate tuaj yeem ua roj rau cov leeg nqaij
Dab tsi yog qhov txawv ntawm lub hauv paus thiab posterior hauv paus ntawm tus txha caj qaum?
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Ventral cag: Kuj hu ua lub hauv paus anterior, nws yog lub hauv paus efferent lub cev muaj zog ntawm tus txha nqaj qaum. autonomic: Ua los yog tshwm sim involuntarily, tsis nco qab tswj. dorsal hauv paus: Kuj tseem hu ua lub hauv paus tom qab, lub hauv paus kev nkag siab zoo ntawm lub paj hlwb
Lub luag haujlwm ntawm ATP hauv cov leeg nqaij yog dab tsi?
![Lub luag haujlwm ntawm ATP hauv cov leeg nqaij yog dab tsi? Lub luag haujlwm ntawm ATP hauv cov leeg nqaij yog dab tsi?](https://i.answers-medical.com/preview/medical-health/14109372-what-is-the-role-of-atp-in-smooth-muscle-j.webp)
Smooth nqaij contraction yog tshwm sim los ntawm zawv zawg ntawm myosin thiab actin filaments (ib tug zawv zawg filament mechanism) ntawm ib leeg. Lub zog rau qhov no tshwm sim yog muab los ntawm hydrolysis ntawm ATP. Kev cog lus yog pib los ntawm kev tswj hwm calcium-phosphorylation ntawm myosin, ntau dua li calcium-activated troponin system
Lub luag haujlwm ntawm ATP hauv cov leeg nqaij sib tw quizlet yog dab tsi?
![Lub luag haujlwm ntawm ATP hauv cov leeg nqaij sib tw quizlet yog dab tsi? Lub luag haujlwm ntawm ATP hauv cov leeg nqaij sib tw quizlet yog dab tsi?](https://i.answers-medical.com/preview/medical-health/14111287-what-is-the-role-of-atp-in-muscle-contraction-quizlet-j.webp)
ATP khi rau myosin ua rau nws hloov txoj hauj lwm thiab txuas mus rau actin thiab rub, ua rau cov leeg nqaij sib cog lus. Yog tsis muaj ATP, cov leeg tsis tuaj yeem cog lus raws li ib feem ntawm cov leeg tsis tuaj yeem txuas mus rau lwm qhov