Dab tsi yog qhov ua haujlwm ntawm tus txha nqaj dendritic?

2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44

Ib tug dendritic spine (los yog qaum) yog membranous protrusion los ntawm ib tug neuron's dendrite uas feem ntau tau txais nkag los ntawm ib leeg axon ntawm synapse. Dendritic spines ua qhov chaw cia rau lub zog synaptic thiab pab xa hluav taws xob xaim hluav taws xob mus rau neuron lub cell lub cev.

Tom qab ntawd, ib tus tseem tuaj yeem nug, dab tsi yog kev hloov pauv ntawm cov nqaj qaum?

Qhov txawv txav txha nqaj qaum yog txuam nrog ntau yam ntawm Neuopsychatric thiab Neurodegenerative ntshawv siab, xws li txo qis synaptic plasticity nyob rau hauv kev nyuaj siab qauv mus rau gradual poob ntawm synapses nyob rau hauv Alzheimer tus qauv. Dendritic txha nqaj qaum yog feeb cellular organelles (kwv yees.

Kuj Paub, txoj haujlwm ntawm synapse yog dab tsi? Kev ua haujlwm ntawm synapse yog hloov hluav taws xob ua haujlwm (cov ntaub ntawv) ntawm ib lub xov tooj mus rau lwm qhov. Kev hloov pauv tuaj yeem yog los ntawm cov hlab ntsha mus rau cov hlab ntsha (neuro-neuro), lossis cov hlab ntsha mus rau cov leeg nqaij (neuro-myo). Lub cheeb tsam ntawm lub pre- thiab postsynaptic membrane yog nqaim heev, tsuas yog 30-50 nm.

Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog dendritic sprouting?

nyiaj laus dendritic sprouting restores auditory muaj nuj nqi rau. hlwb. Yog li, nws tau qhia tias qhov dendritic shape ib. txheeb xyuas Int, nrog rau nws cov kev sib txuas synaptic, tau hloov pauv raws li. qhov tshwm sim ntawm kev tsis hnov lus ntev.

Synapses tsim li cas?

Synapse tsim koom nrog kev lees paub ntawm lub hom phiaj postsynaptic los ntawm kev loj hlob axons, tsim ntawm kev sib cuag thawj zaug, thiab kev piav qhia tom qab ntawm lub tshuab xa hluav taws xob tso tawm thiab cov cuab yeej postsynaptic ntawm cov chaw sib cuag.