Qhov txawv ntawm Bipolar Cells thiab Ganglion Cells

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Qhov txawv ntawm Bipolar Cells thiab Ganglion Cells
Qhov txawv ntawm Bipolar Cells thiab Ganglion Cells

Video: Qhov txawv ntawm Bipolar Cells thiab Ganglion Cells

Video: Qhov txawv ntawm Bipolar Cells thiab Ganglion Cells
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Qhov sib txawv tseem ceeb ntawm cov hlwb bipolar thiab ganglion hlwb yog cov hlwb bipolar yog cov interneurons tam sim no nyob rau hauv ob txheej ntawm retina uas hloov cov ntaub ntawv pom los ntawm photoreceptors mus rau ganglion hlwb thaum ganglion hlwb yog retina ganglion neurons nyob rau hauv peb txheej ntawm lub retina. retina uas nqa cov hlab ntsha impulses los ntawm cov hlwb bipolar mus rau thawj qhov muag pom hauv lub hlwb.

Lub retina yog ib txheej nyias ntawm cov ntaub so ntswg nyob tom qab ntawm lub qhov muag. Nws yog lub teeb-sensitive txheej. Yog li ntawd, nws captures lub teeb thiab xa cov teeb liab mus rau lub hlwb. Nws yog cov paj hlwb uas tsim los ntawm ob peb txheej. Cov paj hlwb ntawm retina tau txais thiab teeb tsa cov ntaub ntawv pom. Qhov tseeb, cov hlwb hauv retina hloov lub teeb lub zog rau hauv cov hlab ntsha impulses. Neurons nyob rau hauv lub retina yog teem nyob rau hauv peb txheej. Hauv thawj txheej, muaj cov cell photoreceptor. Hauv txheej thib ob, muaj cov hlwb bipolar. Nyob rau hauv peb txheej, ganglion hlwb muaj nyob. Nyob rau hauv lub retina, cov ntaub ntawv taug kev los ntawm photoreceptors mus rau bipolar hlwb mus rau ganglion hlwb. Tom qab ntawd ganglion hlwb xa cov hlab ntsha impulses mus rau lub hlwb thiaj li tsim tau cov duab pom. Peb cov txheej txheem neuron no tau sib cais los ntawm ob txheej nruab nrab.

Dab tsi yog Bipolar Cells?

Bipolar hlwb yog ib hom paj hlwb hauv retina. Lawv yog cov interneurons uas hloov cov ntaub ntawv pom los ntawm photoreceptor hlwb nyob rau hauv lub deepest txheej rau ganglion hlwb nyob rau hauv peb txheej. Raws li txoj cai, cov hlwb bipolar muaj lub cev ntawm tes uas nyob hauv cov txheej txheem nuclear sab hauv. Primary dendrites ntawm bipolar cell txuas mus rau txheej txheej plexiform. Ib qho axon ntawm bipolar cell txuas mus rau sab hauv plexiform txheej. Muaj ntau yam subtypes ntawm cov hlwb bipolar uas txawv hauv lawv cov morphology, synaptic connectivity thiab cov khoom teb.

Qhov txawv ntawm Bipolar Cells thiab Ganglion Cells
Qhov txawv ntawm Bipolar Cells thiab Ganglion Cells

Daim duab 01: Bipolar Cells

Bipolar hlwb tsis yog nyob hauv retina nkaus xwb. Lawv kuj pom muaj nyob rau hauv cov hlab ntsha vestibular, spinal ganglia thiab cerebral cortex. Cov hlwb bipolar sib txuas lus los ntawm qhov muaj peev xwm ua tau zoo dua li qhov ua tau zoo.

Dab tsi yog Ganglion Cells?

Ganglion hlwb yog ib hom paj hlwb pom nyob rau hauv peb txheej los yog innermost txheej ntawm lub retina. Cov hlwb no tau txais cov cim los ntawm cov hlwb bipolar thiab retina amacrine hlwb. Tom qab ntawd cov hlwb ganglion xa cov ntaub ntawv pom nyob rau hauv daim ntawv ntawm kev ua muaj peev xwm mus rau ntau thaj tsam hauv thalamus, hypothalamus, thiab mesencephalon, lossis midbrain.

Qhov txawv tseem ceeb - Bipolar Cells vs Ganglion Cells
Qhov txawv tseem ceeb - Bipolar Cells vs Ganglion Cells

Daim duab 02: Ganglion Cells

Nyob hauv peb lub retina, muaj li ntawm 0.7 txog 1.5 lab retina ganglion hlwb. Feem ntau, muaj peb chav kawm ntawm cov kab mob qog nqaij hlav hauv lub hlwb hauv tib neeg retina. Lawv yog W-ganglion, X-ganglion thiab Y-ganglion.

Dab tsi zoo sib xws ntawm Bipolar Cells thiab Ganglion Cells?

  • Cov hlwb Bipolar thiab cov hlwb ganglion yog ob hom paj hlwb hauv retina.
  • cov hlwb bipolar hloov cov ntaub ntawv pom mus rau ganglion hlwb hauv retina.
  • Signals yuav tsum dhau los ntawm cov hlwb bipolar kom mus txog lub hlwb ganglion.
  • Vim cov hlwb bipolar thiab ganglion hlwb, peb tuaj yeem pom tau ntawm peb lub qhov muag.
  • Lawv sib cais los ntawm txheej nruab nrab.

Qhov txawv ntawm Bipolar Cells thiab Ganglion Cells yog dab tsi?

Bipolar hlwb yog cov paj hlwb pom nyob rau hauv ob txheej ntawm retina, thaum ganglion hlwb yog cov paj hlwb pom nyob rau hauv peb los yog innermost txheej ntawm lub retina. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cov hlwb bipolar thiab ganglion hlwb. Functionally, lub hlwb bipolar xa cov teeb liab los ntawm photoreceptors mus rau ganglion hlwb, thaum lub hlwb ganglion xa cov ntaub ntawv los ntawm cov hlwb bipolar mus rau lub hlwb. Ntxiv mus, cov hlwb bipolar xa cov ntaub ntawv nyob rau hauv daim ntawv ntawm gradient muaj peev xwm, thaum ganglion hlwb xa cov ntaub ntawv nyob rau hauv daim ntawv ntawm ib tug muaj peev xwm ua.

Hauv qab infographic qhia ntau cov ntsiab lus ntawm qhov sib txawv ntawm cov hlwb bipolar thiab ganglion hlwb ua ib sab ntawm kev sib piv.

Qhov txawv ntawm Bipolar Cells thiab Ganglion Cells nyob rau hauv daim ntawv Tabular
Qhov txawv ntawm Bipolar Cells thiab Ganglion Cells nyob rau hauv daim ntawv Tabular

Summary – Bipolar Cells vs Ganglion Cells

Nyob rau hauv lub retina ntawm tib neeg lub qhov muag, photoreceptors uas nyob rau hauv lub deepest txheej teb rau lub teeb ua ntej. Tom qab ntawd photoreceptors xa cov teeb liab mus rau cov hlwb bipolar, uas yog lub paj hlwb thib ob hauv retina. Cov hlwb bipolar txuas mus rau txheej sab hauv ntawm cov neurons, uas yog cov hlwb ganglion. Yog li, ganglion hlwb tau txais cov ntaub ntawv los ntawm cov hlwb bipolar thiab xa mus rau lub hlwb. Bipolar hlwb xa cov teeb liab nyob rau hauv daim ntawv ntawm gradient muaj peev xwm, thaum ganglion hlwb xa cov teeb liab nyob rau hauv daim ntawv ntawm ib tug muaj peev xwm ua. Yog li, qhov no qhia txog qhov sib txawv ntawm cov hlwb bipolar thiab ganglion hlwb.

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