![Dab tsi yog qhov ua rau kom cov calcium nkag mus rau hauv lub cell? Dab tsi yog qhov ua rau kom cov calcium nkag mus rau hauv lub cell?](https://i.answers-medical.com/preview/medical-health/13980715-what-exactly-causes-an-influx-of-calcium-into-the-cell-j.webp)
Video: Dab tsi yog qhov ua rau kom cov calcium nkag mus rau hauv lub cell?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Oxidative kev nyuaj siab ua Ca (2+) influx rau hauv cytoplasm los ntawm ib puag ncig sab nraud thiab los ntawm endoplasmic reticulum lossis sarcoplasmic reticulum (ER/SR) los ntawm ntawm tes membrane thiab ER/SR raws, feem. Nce Ca(2+) concentration hauv cytoplasm ua Ca (2+) influx rau hauv mitochondria thiab nuclei.
Tsis tas li ntawd, yuav ua li cas thaum calcium nkag mus rau hauv lub cell?
Cov calcium tias nkag lub siab ntawm tes dhau ntawm calcium ion channel qhib lub ryanodine receptor kom tso tawm txaus calcium los ntawm sarcoplasmic reticulum los pib lub plawv mob ntsws. Calcium nkag mus rau hauv lub cell los ntawm "qhov rooj" hu ua ion channels, thiab cuam tshuam nrog ntau yam khoom siv ntawm ntawm tes.
Ib tus kuj tseem yuav nug tau tias, kev nkag mus ntawm ca2+ mus rau hauv lub dav hlau axon ua rau yog dab tsi? Cov tshuaj Calcium : Pib ntawm Kev Tso Tawm Neurotransmitter. Qhov no yog ib sab saib ntawm tib neeg lub hlwb, tig mus rau sab laug, uas qhia txog qhov kev ua haujlwm uas muaj peev xwm taug kev hauv qab axon . Thaum qhov kev nqis tes ua muaj peev xwm nce mus txog davhlau ya nyob twg , nws activates voltage-dependent calcium channels, tso cai calcium ions kom ntws rau hauv lub hnub qub.
Tsuas yog li ntawd, dab tsi ua rau muaj kev nce ntxiv hauv cov calcium nyob hauv?
Calcium . Intracellular calcium siab nce tsis ntev tom qab pib ntawm hypoxia. Qhov ntsuas hluav taws xob calcium cov channel qhib hauv cov lus teb rau qhov poob peev xwm transmembrane, thiab nce intracellular sodium siab ua daim nyias nyias-khi Na/Ca pauv kom thim rov qab nws cov haujlwm.
Puas yog calcium ua rau muaj peev xwm ua tau?
Tshuaj synapses Lub sij hawm tuaj txog ntawm lub peev xwm ua qhib qhov hluav taws xob-rhiab calcium raws nyob rau hauv lub presynaptic membrane; cov influx ntawm calcium ua vesicles puv nrog cov neurotransmitter kom txav mus rau ntawm lub xovtooj ntawm tes thiab tso tawm lawv cov ntsiab lus mus rau hauv qhov sib xyaw ua ke.
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