Raws li myosin siv lub zog, nws txav mus los ntawm "lub zog stroke," rub cov actin filament mus rau the M-line . Thaum cov actin raug rub kwv yees li 10 nm mus rau M-line, sarcomere sarcomere Ib qho lus teb ntxiv rau kev puas tsuaj sarcomere yog necrosis tom qab kev puas tsuaj rau mysium, uas nce siab txog 48 teev tom qab kev tawm dag zog. Cov nqaij ntshiv yoog mus rau cov qauv kev puas tsuaj los ntawm kev tawm dag zog, thiab kev mob thiab kev puas tsuaj ntxiv tom qab kev tawm dag zog yog txo. https://courses.lumenlearning.com › fitness › tshooj › ce…
Kev ua xua ua rau cov leeg nqaij puas | Lifetime Fitness and Wellness
shortens thiab cov leeg cog lus. Thaum kawg ntawm lub zog stroke, lub myosin nyob rau hauv ib qho chaw qis zog.
actin filaments txav mus rau qhov twg thaum lub sijhawm cog lus?
daim duab 11.21. Sliding-filament qauv ntawm cov leeg nqaij contraction. Cov actin filaments swb dhau ntawm myosin filaments mus rau nruab nrab ntawm sarcomere. Qhov tshwm sim yog shortening ntawm lub sarcomere yam tsis muaj kev hloov nyob rau hauv filament ntev.
Puas actin filaments swb thaum lub cev nqaij daim tawv?
Raws li txoj kev xav ntawm zawv zawg filament, myosin (thick) filaments ntawm cov nqaij fibers swb dhau ntawm actin (nyias) filaments thaum cov leeg nqaij, thaum ob pawg ntawm filaments tseem nyob. ntawm qhov ntev tas mus li.
Ua actin filaments pw sabib sab?
Nyob rau hauv cov nqaij ntshiv tag nrho, actin filaments pw ib sab. Nyob rau hauv cov nqaij ntshiv, qhov kawg ntawm cov actin filaments sib tshooj. lub zog los ntawm tib lub ATP molecule uas detaches tus ntoo khaub lig-bridge kuj tsim ib tug tom ntej. … Cov ntaub nyias nyias muaj xws li actin, troponin, thiab tropomyosin molecules.
Yuav ua li cas rau filaments thaum contraction?
Thaum (a) sarcomere (b) cog lus, Z kab txav los ze zog ua ke thiab kuv pawg me me. Lub A band nyob twj ywm tib qhov dav thiab, ntawm tag nrho cov contraction, cov nyias nyias sib tshooj. Thaum lub sarcomer luv luv, qee thaj tsam luv thaum lwm tus nyob tib qhov ntev.
