Dab tsi yog qhov ua haujlwm ntawm qhov sib txawv synaptic?

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

Cov lus mus los ntawm presynaptic davhlau ya nyob twg ntawm ib tug synapse mus rau synaptic cleft mus rau postsynaptic davhlau ya nyob twg tom ntej synapse . Cov synaptic cleft Feem ntau yog siv los thauj cov neurotransmitters los ntawm ib qho synapse mus rau lwm qhov txhawm rau txuas ntxiv nqa cov hlab ntsha mus txog thaum nws mus txog nws lub hom phiaj.

Ib yam li ntawd ib tug yuav nug, dab tsi yog qhov tseem ceeb ntawm lub synapse?

Kev ua haujlwm ntawm synapse yog hloov cov haujlwm hluav taws xob (cov ntaub ntawv) los ntawm ib qho ntawm tes mus rau lwm tus. 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, lo lus nug yog, dab tsi yog synapses thiab lawv ua haujlwm li cas? Ntawm a synapse , ib tug neuron xa lus rau lub hom phiaj neuron-lwm cell. Hauv tshuaj synapse , qhov muaj peev xwm ua tau ua rau presynaptic neuron rau tso cov neurotransmitters. Cov no molecules khi rau receptors ntawm postsynaptic cell thiab ua feem ntau los yog tsawg dua rau tua qhov peev xwm ua.

Ntawm no, dab tsi tshwm sim hauv qhov sib txawv synaptic?

Thaum lub paj hlwb impulse nce mus txog synapse Thaum kawg ntawm lub neuron, nws tsis tuaj yeem hla ncaj qha mus rau lwm qhov. Hloov chaw, nws ua rau lub paj hlwb tso tawm cov tshuaj neurotransmitter. Cov neurotransmitter drifts hla qhov sib txawv nruab nrab ntawm ob lub neurons.

Synapse piav qhia yog dab tsi?

Synapse , tseem hu ua neuronal junction, qhov chaw ntawm kev sib kis ntawm hluav taws xob paj hlwb impulses ntawm ob lub paj hlwb (neurons) los yog ntawm ib tug neuron thiab ib caj pas los yog nqaij cell (effector). Kev sib txuas sib txuas ntawm cov neuron thiab cov leeg nqaij yog hu ua neuromuscular hlws ris.