Video: Puas yog cov neurons eukaryotic lossis prokaryotic?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Neurons yog cov cell uas tsim cov tub ntxhais ntawm lub paj hlwb vim lawv muaj peev xwm txais thiab xa cov cim. Nws muaj qhov raug eukaryotic cov tsos mob cov khoom siv ntawm tes xws li cov keeb, cov kab ke, thiab cov kab ke endomembrane.
Ib qho yooj yim, puas yog cov hlab ntsha ua los ntawm cov neurons?
Nws yog tsim los ntawm neurons , los yog paj hlwb , uas tau txais thiab xa cov kev xav, thiab neuroglia, tseem hu ua glial cells lossis glia, uas pab txhawb kev nthuav tawm ntawm paj hlwb impulse nrog rau muab cov as -ham rau cov neurons . Cov khoom ntawm axons ua rau qab haus huv hauv PNS thiab cov kab lus hauv CNS.
Ntxiv mus, qhov sib txawv ntawm cov neurons thiab qab haus huv yog dab tsi? A hlwb yog lub xovtooj ntawm tes, lub luag haujlwm rau kev tsim thiab xa tawm ntawm cov kev xav ntawm lub paj hlwb (kev muaj peev xwm ua tau), kev tsim cov neurotransmitters thiab, qee zaum, txhawm rau txheeb xyuas cov cim sab hauv thiab sab nrauv (zoo li kov). A paj hlwb yog pawg ntawm axons, uas yog ib feem ntawm cov neurons.
Tib neeg tseem nug, cov neurons yog dab tsi?
Cov hlwb yog chav ua haujlwm yooj yim ntawm lub hlwb, tshwj xeeb ntawm tes tsim los xa cov ntaub ntawv mus rau lwm lub paj hlwb, leeg nqaij, lossis qog qog. Neurons yog cov cell nyob hauv cov hlab ntsha uas xa cov ntaub ntawv mus rau lwm cov paj hlwb, cov leeg, lossis cov qog qog. Feem ntau cov neurons muaj lub cev ntawm tes, axon, thiab dendrites.
Neurons nyob qhov twg?
Myelinated neurons feem ntau pom muaj nyob hauv cov hlab ntsha hauv nruab nrog cev (hnov lub cev thiab lub cev muaj zog neurons), thaum tsis muaj cov leeg hlwb sib txuas tau pom hauv lub hlwb thiab tus txha nqaj qaum . Dendrites lossis cov hlab ntsha xaus.
Pom zoo:
Qhov twg ua lub cev muaj zog loj neurons synapse nrog qis lub cev neurons?
Lub cev muaj zog loj neurons synapse nyob rau hauv tus txha nraub qaum nrog lub hauv ntej horn hlwb ntawm qis lub cev muaj zog neurons, feem ntau yog los ntawm interneurons. Lub hauv ntej horn hlwb yog lub cev ntawm lub cev qis neurons thiab nyob hauv qhov teeb meem grey ntawm tus txha caj qaum
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