Video: Dab tsi yog A band hauv sarcomere?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
A- Band : qhov sib piv qhov tsaus ntuj tag nrho hauv ib sarcomere . Lub cheeb tsam no yog tsim los ntawm tuab filaments thiab nyias filaments. Cov cheeb tsam no tsis ntsws thaum lub cev nqaij ntshiv.
Cov lus nug tseem yog, Dab tsi yog A band ua los ntawm?
Nws yog muaj li ntawm nyias myosin filaments. Thaum lub cev nqaij ntshiv, tus I. band luv. Lub A band yog ib feem ntawm sarcomere dua li muaj ob qho tib si myosin thiab actin filaments. Nco ntsoov tias thaum lub cev nqaij ntshiv, qhov ntev ntawm cov kab xev tsis hloov pauv.
dab tsi sawv cev rau pab pawg A hauv sarcomere? Ib A- band muaj tag nrho qhov ntev ntawm ib qho tuab tuab. Anisotropic tshuaj band muaj ob qho tib si tuab thiab nyias filaments. Nyob rau hauv A- band yog cheeb tsam zoo nkauj hu ua H-zone (los ntawm German "heller", ci dua). Lub npe rau lawv qhov sib zog pom nyob hauv lub tsom iav polarization.
Kuj paub yog, Dab tsi yog A band hauv cov leeg?
Kev txhais: A band yog thaj tsam ntawm striated cov leeg sarcomere uas muaj myosin tuab filaments. Qhov tseeb, A. band yog tag nrho qhov ntev ntawm cov tuab tuab ntawm sarcomere.
Dab tsi yog qhov ua haujlwm ntawm A band?
Lawv pom tias ib cheeb tsam ntawm sarcomere rov hais dua, tom qab ntawd hu ua “A. band , Tau tswj hwm qhov ntev tas li thaum sib cog. Qhov A. band muaj cov ntsiab lus siab dua ntawm tuab myosin filament, raws li qhov xav tau los ntawm thaj chaw nruj. Lub A band yog thaj chaw nyob hauv nruab nrab ntawm sarcomere qhov twg tuab thiab nyias cov filaments sib tshooj.
Pom zoo:
Dab tsi yog sarcomere hauv biology?
A sarcomere (Greek σ ά ρ ξ sarx 'nqaij', Μέ ρ ο ς meros 'ib feem') yog chav nyuaj ntawm cov nqaij leeg nqaij. Nws yog chav tsev rov ua dua ntawm ob kab Z. Cov leeg pob txha tau tsim los ntawm cov leeg tubular cov leeg (myocytes hu ua cov leeg nqaij lossis myofibers) uas tau tsim hauv cov txheej txheem hu ua myogenesis
Dab tsi yog qhov sib txawv ntawm txoj hauv kev sab hauv thiab sab hauv ntawm cov ntshav khov?
Txoj hauv kev hauv tsev xav tau tsuas yog cov khoom sib txuam pom hauv cov ntshav nws tus kheej - tshwj xeeb, cov ntshav khov XII (Hageman factor) los ntawm cov platelets. Txoj hauv kev txuas ntxiv yog pib los ntawm yam sab nraud rau cov ntshav, hauv cov ntaub so ntswg uas nyob ib sab rau cov hlab ntshav puas
Tus qauv ntawm sarcomere yog dab tsi?
Sarcomere yog chav sib cog lus yooj yim ntawm cov leeg nqaij. Txhua tus sarcomere yog tsim los ntawm ob lub ntsiab lus tseem ceeb ntawm cov protein - actin thiab myosin - uas yog cov txheej txheem ua haujlwm muaj feem xyuam rau cov leeg nqaij. Cov qauv nrov tshaj plaws uas piav txog kev sib zog ntawm cov leeg yog hu ua zawv zawg filament theory
Dab tsi cov qauv ntawm lub sarcomere yog txuam nrog cov xub?
Nws yog hais txog actin filament. Actin filaments yog cov khoom sib xyaw ntawm sarcomere uas tau txav mus los
Dab tsi yog qhov tuab filament ntawm sarcomere?
Sarcomeres tau tsim los ntawm cov protein, cov fibrous ntev uas yog cov kab sib txuas uas swb dhau ib leeg thaum cov leeg sib cog lus lossis so. Ob ntawm cov protein tseem ceeb yog myosin, uas ua rau cov tuab filament, thiab actin, uas ua rau cov filament nyias. Myosin muaj lub ntsej muag ntev, fibrous thiab lub taub hau thoob plaws, uas khi rau actin