Qhov twg ntawm cov leeg nqaij tuaj yeem piav qhia tias yog qhov luv tshaj sarcomere?? Lo lus teb yog: " zog stroke" kauj ruam.
Yuav ua li cas rau sarcomere thaum contraction?
Rau cov leeg nqaij kom cog lus, tus sarcomere yuav tsum luv. Txawm li cas los xij, tuab thiab nyias filaments-cov khoom ntawm sarcomeres-tsis luv. … Cov kab A band nyob tib qhov dav thiab, ntawm qhov kev cog lus tag nrho, cov ntaub nyias nyias sib tshooj. Thaum lub sarcomer luv luv, qee thaj tsam luv thaum lwm tus nyob tib qhov ntev.
Thaum cov leeg nqaij contraction tshwm sim cov actin tau luv dua?
Raws li cov actin raug rub, cov filaments txav kwv yees li 10 nm mus rau M kab. Qhov kev txav no yog hu ua lub zog stroke, vim nws yog kauj ruam ntawm lub zog tsim tawm. Raws li cov actin raug rub mus rau M kab, sarcomere shortens thiab cov leeg cog lus.
Yuav ua li cas yog cov kauj ruam ntawm cov leeg nqaij?
8 kauj ruam ntawm cov leeg nqaij leeg yog dab tsi?
- kev ua kom muaj zog rau cov leeg.
- ACETYLCHOLINE tso tawm los ntawm neuron.
- acetylcholine khi rau cov leeg cell membrane.
- sodium diffuse rau hauv cov leeg, kev ua haujlwm muaj peev xwm pib.
- calcium ions daim ntawv cog lus rau actin.
- myosin txuas rau actin, daim ntawv hla kev.
6 kauj ruam ntawm cov leeg nqaij leeg yog dab tsi?
Sliding filament theory (musclecontraction) 6 kauj ruam D:
- Kauj Ruam 1: Calcium ions. Calcium ions raug tso tawm los ntawm sarcoplasmic reticulum hauv actin filament. …
- Kauj Ruam 2: Cov ntawv hla hla. …
- Kauj Ruam 3: Myosin taub hau swb. …
- Kauj Ruam 4: skeletal nqaij contraction tau tshwm sim. …
- Kauj Ruam 5: Hla tus choj tawg. …
- Kauj Ruam 6: troponin.
