Structure of a neuron. Ntawm ib kawg ntawm lub cev ntawm tes (thiab qhov tseeb, nyob ib ncig ntawm feem ntau ntawm nws cov periphery) muaj ntau yam me me, cov ceg ntoo hu ua dendrites. Txuas ntxiv los ntawm lwm qhov kawg ntawm lub cev ntawm tes ntawm qhov chaw hu ua axon hillock axon hillock Lub axon hillock yog ib feem tshwj xeeb ntawm lub cev ntawm tes (lossis soma) ntawm cov neuron uas txuas rau axon. Nws tuaj yeem txheeb xyuas tau siv lub teeb pom kev zoo los ntawm nws qhov tsos thiab qhov chaw nyob hauv lub paj hlwb thiab los ntawm nws qhov sib faib me me ntawm Nissl tshuaj. https://en.wikipedia.org › wiki › Axon_hillock
Axon hillock - Wikipedia
yog axon, ntev, nyias, raj zoo li protrusion.
Dendrites yog dab tsi thiab lawv nyob qhov twg?
Dendrites (dendron=ntoo) yog membranous zoo li qhov projections tshwm sim los ntawm lub cev ntawm cov neuron, kwv yees li 5-7 ib neuron nyob nruab nrab, thiab ntev li ntawm 2 μm.. Lawv feem ntau yog ceg, tsim kom muaj qhov ntom ntom zoo li arborization hu ua tsob ntoo dendritic nyob ib ncig ntawm cov neuron.
Pob neurons puas muaj dendrites?
Ntau cov neurons muaj ntau yam dendrites, uas nthuav tawm sab nraud ntawm lub cev ntawm tes thiab tshwj xeeb kom tau txais cov cim qhia tshuaj los ntawm axon termini ntawm lwm cov neurons. Dendrites hloov cov teeb liab no rau hauv cov hluav taws xob me me thiab xa mus rau sab hauv, nyob rau hauv kev coj ntawm lub cev ntawm tes.
Cov neurons nyob qhov twg?
Lawv nyob hauv tuscentral paj hlwb (lub hlwb thiab qaum qaum) thiab nyob rau hauv autonomic ganglia. Multipolar neurons muaj ntau tshaj li ob txheej txheem emanating los ntawm neuron cell lub cev.
Dab tsi ntawm lub hlwb yog dendrites?
Lub hlwb muaj peb yam tseem ceeb: cerebrum, cerebellum thiab brainstem. Cerebrum: yog qhov loj tshaj plaws ntawm lub hlwb thiab yog tsim los ntawm sab xis thiab sab laug hemispheres. Nws ua haujlwm ntau dua li kev txhais lus kov, pom kev thiab hnov lus, nrog rau kev hais lus, kev xav, kev xav, kev kawm, thiab kev tswj kom zoo ntawm kev txav.
