Cov txheej txheem:
- Yuav ua li cas ua rau muaj kev sib kis?
- Yuav ua li cas thaum lub sijhawm depolarization?
- Dab tsi yog qhov txawv ntawm depolarization thiab repolarization?
- plaub kauj ruam ntawm kev nqis tes ua yog dab tsi?
Video: Puas depolarisation ua rau contraction?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Depolarization ntawm cardiac myocytes ua rau contraction ntawm cov hlwb thiab yog li lub plawv contraction tshwm sim. Depolarization thawj zaug pib hauv SA node, uas tseem hu ua cardiac pacemaker.
Yuav ua li cas ua rau muaj kev sib kis?
1. A Cov leeg nqaij yog tshwm sim thaum muaj peev xwm ua tau taug kev raws cov hlab ntsha mus rau Cov leeg. Cov leeg nqaij pib thaum lub paj hlwb tsim cov teeb liab. Lub teeb liab, ib qho impulse hu ua qhov muaj peev xwm ua tau, mus los ntawm ib hom paj hlwb hu ua lub cev muaj zog neuron.
Yuav ua li cas thaum lub sijhawm depolarization?
Lub depolarization, tseem hu ua theem nce, yog tshwm sim thaum zoo them sodium ions (Na+) dheev maj nrawm los ntawm qhib qhov hluav taws xob-gated sodium channel rau hauv neuron. Raws li ntxiv sodium rushes nyob rau hauv, lub membrane muaj peev xwm thim rov qab nws polarity.
Dab tsi yog qhov txawv ntawm depolarization thiab repolarization?
Kev txav ntawm lub cell daim nyias nyias mus rau qhov zoo dua yog hu ua depolarization. Lub hloov pauv hauv daim nyias nyias los ntawm qhov zoo mus rau qhov tsis zooyog hu ua repolarization.
plaub kauj ruam ntawm kev nqis tes ua yog dab tsi?
Ib qho peev xwm ua tau tshwm sim los ntawm qhov pib lossis suprathreshold stimuli rau ntawm neuron. Nws muaj plaub theem: depolarization, overshoot, thiab repolarization.
Pom zoo:
Yog lorentz contraction tiag tiag?
Nyob rau hauv ob peb daim ntawv qhia kev kawm tsis ntev los no, nws tau hais meej meej tias Lorentz contraction yog ib qho tiag, lub cev deformation ntawm ib qho khoom txav tsis sib xws, qhov tshwm sim uas tshwm sim tsis hais txog txheej txheem ntawm Kev ntsuas kev txheeb ze los ntawm tus neeg soj ntsuam [
Puas cov nqaij fascicles luv thaum lub sij hawm contraction?
Thaum lub sijhawm isometric contraction, lub zog ntau dua piv nrog thaum lub sij hawm concentric contraction; Yog li ntawd shortening ntawm fascicles, ncab ntawm SEC, thiab pennation pennation Ib pennate lossis pinnate leeg (tseem hu ua penniform leeg) yog ib hom nqaij pob txha nrog fascicles uas txuas.
Depolarisation txhais li cas?
Nyob rau hauv biology, depolarization yog ib qho kev hloov nyob rau hauv ib lub xovtooj ntawm tes, thaum lub sij hawm ntawm lub cell mus rau ib tug hloov nyob rau hauv hluav taws xob kev faib, ua rau tsis zoo nqi nyob rau hauv lub cell piv rau sab nraud.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau?
Ntau tus neeg ua tiav lawv txoj kev kho hniav thiab muaj cov hniav zoo nkauj, txawm li cas los xij, thaum lawv luag ntxhi lawv pom cov hniav luv luv lossis cov pos hniav ntau dhau "gummy luag". Cosmetic crown lengthening yog ib txoj hauv kev yooj yim uas tuaj yeem ua tau zoo heev ua kom lub ntsej muag luag ntxhi ntawm cov neeg mob no .
Rau lub hauv paus ntawm lanthanide contraction piav qhia hauv qab no?
Rau lub hauv paus ntawm L Ib qho me me hlau ion nrog cov nqi ntau dua nyiam cov ligands zoo dua. (iv) Hauv 5d thaiv cov ntsiab lus, vim tsis zoo tiv thaiv ntawm f orbitals, cov nqi hluav taws xob zoo nce ntxiv, yog li txo qhov loj. Qhov no hu ua lanthanide contraction .
