Video: Qhov twg hauv qab no yog ib feem ntawm cov neuron?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Neurons (paj hlwb) muaj peb qhov chaw ua haujlwm ntawm kev sib txuas lus thiab kev koom ua ke: dendrites , cov axons , thiab axon cov davhlau ya nyob twg. Lawv muaj ib feem plaub ntawm cev cev los yog soma , uas nqa tawm cov txheej txheem lub neej yooj yim ntawm neurons. Daim duab ntawm sab xis qhia qhov "raug" neuron.
Ib yam nkaus, tib neeg nug, dab tsi yog qhov ntawm neuron?
Taw qhia: Lub hlwb tau tsim los ntawm kwv yees li 86 txhiab lub paj hlwb (tseem hu ua "neurons"). Neuron muaj 4 ntu tseem ceeb: dendrites , cov cev cell (tseem hu ua " soma "), cov axon thiab cov axon lub davhlau ya nyob twg. Dendrites - Kev txuas ntxiv los ntawm neuron cev cell uas muab cov ntaub ntawv rau lub cev cell.
Ib yam li ntawd, 6 qhov chaw ntawm lub neuron yog dab tsi? Cov qauv ntawm a neuron : Cov duab saum toj no qhia txog cov txheej txheem yooj yim Cheebtsam ntawm qhov nruab nrab neuron , suav nrog dendrite, lub cev ntawm tes, nucleus, Node of Ranvier, myelin sheath, Schwann cell, thiab axon davhlau ya nyob twg.
Ib yam nkaus, tib neeg nug, yam twg hauv qab no tsis yog ib feem ntawm neuron?
Txhua neuron muaj ib cev cell (tseem hu ua a soma ), dendrites thiab ib axon . Axons thiab dendrites yog cov hlab ntsha. Synapse yog, infact, ib tug qauv uas tso cai rau lub neuron kom dhau ib tug hluav taws xob los yog tshuaj teeb liab mus rau lwm neuron, li no, nws tsis yog ib feem ntawm lub neuron.
Puas muaj cov neurons nyob hauv lub cev?
Myelinated cov neurons yog feem ntau pom hauv cov hlab ntsha peripheral (hnov thiab lub cev cov neurons ), thaum uas tsis yog-myelinated cov neurons yog pom nyob rau hauv lub hlwb thiab tus txha caj qaum. Dendrites lossis cov hlab ntsha xaus.
Pom zoo:
Qhov twg ntawm cov hauv qab no yog ib feem ntawm neurons?
Neurons (paj hlwb) muaj peb ntu uas ua haujlwm ntawm kev sib txuas lus thiab kev koom ua ke: dendrites, axons, thiab axon terminals. Lawv muaj ib feem plaub ntawm lub cev ntawm tes lossis soma, uas ua tiav cov txheej txheem lub neej yooj yim ntawm cov neurons
Yam twg ntawm cov hauv qab no feem ntau yog kab mob ntawm cov tsiaj muaj tsiaj?
Anthrax Ib yam li ntawd, koj tuaj yeem nug, yam twg ntawm cov hauv qab no tau txheeb pom tias yog tus pab txhawb rau mob plawv? Ntshav siab, haus luam yeeb, thiab ntshav siab tseem yog qhov tseem ceeb tus pab mus rau lub teb chaws kev kis mob ntawm kab mob plawv .
Yam twg ntawm cov hauv qab no yog daim ntawv feem ntau ntawm cov leeg nqaij hauv cov neeg laus?
Myotonic (tseem hu ua MMD lossis Steinert's disease). Feem ntau ntawm cov leeg nqaij dystrophy hauv cov neeg laus, myotonic musculoskeletal dystrophy cuam tshuam rau txiv neej thiab poj niam, thiab nws feem ntau tshwm sim txhua lub sijhawm txij thaum menyuam yaus txog rau neeg laus
Cov kab mob sib koom ua ke twg yog tus cwj pwm los ntawm kev sib koom ua ke ntawm kev txav mus los thiab kev sib koom ua ke ntawm qhov hnyav ntawm cov pob qij txha uas feem ntau yog relieved los ntawm so?
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Qhov twg ntawm cov hauv qab no yog qhov sib txawv loj ntawm cov pas nrig thiab lub khob hliav qab?
Cov pas nrig yog lub luag haujlwm rau qhov pom ntawm qhov tsis pom kev qis (scotopic vision). Lawv tsis kho qhov muag pom xim, thiab muaj qhov tsis tshua pom kev zoo. Cones yog nquag nyob rau theem siab dua (photopic vision), muaj peev xwm ntawm kev pom xim thiab muaj lub luag haujlwm rau siab spatial acuity