Video: Dab tsi peb hu xov tooj hluav taws xob uas xa mus rau lub axon ntawm lub paj hlwb?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov lus hluav taws xob uas xa mus rau axon ntawm lub neuron raug hu ua kev muaj peev xwm ua. Rau txhua txhua peb sodium ions tso rau sab nraum neuron , tsuas yog ob tug poov tshuaj ions yog pumped rau hauv. Yog li ntawd, tus nqi zoo sab nraum lub axon yog siab dua tus nqi zoo nyob rau sab hauv axon.
Ib yam li ntawd, hluav taws xob hauv qhov kev muaj peev xwm tsim tau li cas?
Neuron uas tawm mus peev xwm ua , los yog paj hlwb impulse, feem ntau hais rau "hluav taws". Ua muaj peev xwm yog tsim tawm los ntawm cov hom tshwj xeeb ntawm qhov hluav taws xob-gated ion raws tau tso rau hauv cov xovtooj ntawm ntshav ntshav. Qhov no ua rau ntau txoj hauv kev qhib, ua rau muaj ntau dua hluav taws xob tam sim no hla lub cell membrane thiab lwm yam.
Qhov thib ob, qhov twg ntawm cov neuron xa lus mus rau lwm lub neurons? Cov ib feem ntawm neuron uas txais cov lus los ntawm lwm yam cov cell hu ua dendrite. Dendrites zoo li cov ceg ntoo. Cov dendrites tib yam txuas rau lub cev ntawm tes uas hu ua soma. Soma yog lub cev ntawm tes, thiab nws yog lub luag haujlwm saib xyuas lub neej ntawm tes.
Ua qhov no hauv kev txiav txim siab, qhov twg ntawm cov hauv qab no tshwm sim raws li lub teeb liab hluav taws xob mus txog qhov kawg ntawm lub axon?
Thaum cov hlab ntsha impulse mus txog qhov kawg ntawm ib qho axon, lub axon tso tawm cov tshuaj hu ua neurotransmitters. Neurotransmitters taug kev hla synapse nruab nrab ntawm axon thiab dendrite ntawm cov neuron tom ntej. Neurotransmitters khi rau daim nyias nyias ntawm dendrite.
Cov lus xa mus los ntawm lub paj hlwb li cas?
Lus mus nrog ib leeg neuron raws li hluav taws xob impulses, tab sis lus nruab nrab neurons taug kev txawv. Hloov cov ntaub ntawv los ntawm neuron rau neuron qhov chaw dhau tso cov tshuaj lom neeg mus rau qhov chaw nruab nrab ntawm lub axon thiab dendrites. Cov txais tos nyob rau ntawm dendrites.
Pom zoo:
Puas yog lub teeb liab hluav taws xob uas feem ntau txav los ntawm lub cev ntawm tes mus rau lub axon mus rau lub dav hlau axon?
Qhov txiaj ntsig zoo no suav nrog qhov muaj peev xwm ua tau: lub teeb liab hluav taws xob uas ib txwm txav los ntawm lub cev ntawm tes los ntawm lub axon mus rau lub dav hlau axon
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