Depolarization thiab hyperpolarization tshwm sim thaum ion channels hauv daim nyias nyias qhib lossis kaw, hloov lub peev xwm ntawm cov ions tshwj xeeb nkag mus lossis tawm ntawm lub xovtoojPiv txwv li: qhib cov channel uas cia cov ions zoo ntws tawm ntawm lub xovtooj (lossis tsis zoo ions ntws hauv) tuaj yeem ua rau hyperpolarization.
Dab tsi ua rau depolarization ntawm neuron?
Depolarization yog tshwm sim thaum raug nqi sodium ions maj nrawm rau hauv cov neuron nrog qhib cov hluav taws xob-gated sodium channels. Repolarization yog tshwm sim los ntawm kev kaw ntawm sodium ion channels thiab qhib cov poov tshuaj ion channels.
Yuav ua li cas rau depolarize ib neuron?
Repolarization feem ntau tshwm sim los ntawm kev txav ntawm qhov zoo them K+ ions tawm ntawm lub cell… Cov theem no tshwm sim tom qab lub xovtooj mus txog nws qhov siab tshaj plaws voltage los ntawm depolarization. Tom qab repolarization, lub cell hyperpolarizes thaum nws mus txog so membrane peev xwm (−70 mV){in neuron −70 mV}.
Yuav ua li cas hauv qab no yuav ua rau lub cev tsis muaj zog?
Yuav ua li cas hauv qab no yuav ua rau lub hlwb puas tsuaj? nce daim nyias nyias permeability rau sodium.
txhais li cas rau depolarize ib neuron?
txav ntawm lub cell daim nyias nyias mus rau qhov muaj txiaj ntsig zoo dua (piv txwv li txav ze ze rau xoom los ntawm so lub peev xwm membrane). Thaum ib tug neuron yog depolarized, nws yuav muaj peev xwm tua hluav taws ntau dua. Lub Ib Hlis 10, 2021 / Guest User/
