![Lub luag hauj lwm dab tsi ua calcium hauv cov leeg nqaij? Lub luag hauj lwm dab tsi ua calcium hauv cov leeg nqaij?](https://i.answers-medical.com/preview/medical-health/14002472-what-role-does-calcium-play-in-muscle-contraction-j.webp)
Video: Lub luag hauj lwm dab tsi ua calcium hauv cov leeg nqaij?
![Video: Lub luag hauj lwm dab tsi ua calcium hauv cov leeg nqaij? Video: Lub luag hauj lwm dab tsi ua calcium hauv cov leeg nqaij?](https://i.ytimg.com/vi/WKTu6HclgcE/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov nqaij contraction lub voj voog yog triggered los ntawm calcium ions khi rau cov protein complex troponin, nthuav tawm cov chaw ua haujlwm-binding ntawm cov actin. ATP tom qab ntawd khi rau myosin, txav cov myosin mus rau nws lub zog siab, tso lub taub hau myosin los ntawm qhov chaw ua haujlwm actin.
Ib yam nkaus, tib neeg nug, dab tsi yog lub luag haujlwm ntawm calcium hauv cov leeg nqaij?
Calcium ua rau kev cog lus los ntawm cov tshuaj tiv thaiv nrog kev tswj hwm cov protein uas nyob rau hauv qhov tsis muaj calcium tiv thaiv kev sib cuam tshuam ntawm actin thiab myosin. Myosin tswj tau muaj nuj nqi nrog ntshiab actin thaum tsis muaj tropomyosin. Calcium Kev khi thiab kev tswj hwm ntawm molluscan myosins nyob ntawm seb muaj kev tswj hwm lub teeb chains.
Tsis tas li ntawd, lub luag haujlwm ntawm calcium nyob rau hauv cov leeg nqaij contraction yog dab tsi? Calcium prolongs lub sij hawm ntawm cov leeg cell depolarization ua ntej repolarization tshwm sim. Kev cog lus nyob rau hauv mob plawv tshwm sim vim yog kev khi ntawm myosin lub taub hau rau adenosine triphosphate (ATP), uas tom qab ntawd rub cov actin filaments mus rau nruab nrab ntawm sarcomere, lub zog siv tshuab ntawm kev cog lus.
Hais txog qhov no, lub luag hauj lwm ntawm calcium nyob rau hauv cov leeg nqaij contraction quizlet yog dab tsi?
Ca ions thiab proteins daim ntawv cog lus los ua qhov tseem ceeb lub luag hauj lwm hauv ob qho tib si cov leeg ntawm tes kev cog lus thiab so. Nws khi rau lub troponin complex, ua rau tropomyosin khi raws cov actin strands hloov txoj hauj lwm thiab nthuav tawm cov myosin khi qhov chaw ntawm cov ntaub nyias nyias.
Dab tsi yog qhov ua haujlwm ntawm calcium ions?
Calcium ions (Ca2+) pab txhawb rau physiology thiab biochemistry ntawm cov kab mob ntawm tes . Lawv ua lub luag haujlwm tseem ceeb hauv txoj kev xa xov hluav taws xob, qhov chaw uas lawv ua raws li tus xa xov thib ob, hauv neurotransmitter tso tawm los ntawm neurons, hauv kev cog lus ntawm tag nrho cov leeg. ntawm tes hom, thiab nyob rau hauv fertilization.
Pom zoo:
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