Cov txheej txheem:

Cov qib sib txawv ntawm cov koom haum ntawm cov leeg yog dab tsi?
Cov qib sib txawv ntawm cov koom haum ntawm cov leeg yog dab tsi?

Video: Cov qib sib txawv ntawm cov koom haum ntawm cov leeg yog dab tsi?

Video: Cov qib sib txawv ntawm cov koom haum ntawm cov leeg yog dab tsi?
Video: 2022 (Tsov xyoo), koj txoj hmoo yuav zoo li cas? ທໍານາຍດວງສະຕາປີ 2022 2024, Lub rau hli ntuj
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Cov Nqaij Cov Txheej Txheem Qib ntawm Lub Koom Haum

Molecular theem - actin thiab myosin. Qib me me - sarcomere thiab myofibrils. Cell qib - myoblasts thiab myofibers. Cov ntaub so ntswg theem - neuromuscular txuas thiab fascicles.

Tom qab ntawd, ib tug kuj yuav nug, lub koom haum ntawm ib leeg yog dab tsi?

Ib pob txha cov leeg lub cev yog teem rau hauv ob peb fascicles. Lawv tau ntim ib sab-ib sab thiab puag ncig los ntawm perimysium, uas muaj cov hlab ntsha thiab qab haus huv. Epimysium yog cov ntaub so ntswg txuas ib puag ncig tag nrho cov leeg lub cev.

Ib tus kuj tseem yuav nug, cov kauj ruam hauv kev txo cov leeg nqaij yog dab tsi? Cov txheej txheem ntawm cov leeg nqaij contraction tshwm sim dhau ntawm ntau cov kauj ruam tseem ceeb, suav nrog:

  • Depolarisation thiab calcium ion tso tawm.
  • Actin thiab myosin hla tus choj tsim.
  • Sliding mechanism ntawm actin thiab myosin filaments.
  • Sarcomere shortening (muscle contraction)

Ib sab saum toj, dab tsi yog theem ntawm lub koom haum ntawm cov leeg nqaij los ntawm qhov tsawg tshaj plaws mus rau qhov loj?

Qhov kev txiav txim kom raug rau qhov tsawg tshaj plaws rau cov koom haum loj tshaj plaws hauv cov leeg nqaij yog _

  • filament, myofibril, nqaij leeg, fascicle..
  • myofibril, nqaij fiber, filament, fascicle..
  • fascicle, filament, nqaij leeg, myofibril..
  • cov leeg nqaij, fibicle, filament, myofibril..

Dab tsi yog sarcomere thiab nws cov proteins zoo li cas?

Sarcomeres yog tsim los ntawm ntev, fibrous cov proteins raws li filaments uas swb yav dhau los ib leeg thaum cov leeg cog lus lossis so. Ob ntawm qhov tseem ceeb cov proteins yog myosin, uas tsim cov filament tuab, thiab actin, uas ua rau nyias filament.

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