Structure thiab Function of Skeletal Muscle Lub postsynaptic membrane muaj tshwj xeeb ACh receptors (AChR), concentrated opposite thaj chaw nquag. Cov no yog ib qho zoo tshaj plaws-tus cwj pwm ionic channel. Lawv qhov qhib tso cai rau ions ntws raws li kev khi tshwj xeeb ntawm ACh.
Yuav ua li cas yog lub luag haujlwm ntawm postsynaptic membrane?
Nyob rau hauv cov tshuaj synapse, lub postsynaptic membrane yog membrane uas tau txais lub teeb liab (binds neurotransmitter) los ntawm presynaptic cell thiab teb los ntawm depolarisation los yog hyperpolarisation.
Vim li cas khi rau ntawm daim nyias nyias tseem ceeb?
Kev khi ntawm cov neurotransmitters, ncaj qha lossis tsis ncaj, ua rau cov ion channel hauv cov ntaub ntawv postsynaptic qhib lossis kaw(Daim duab 7.1). Feem ntau, qhov tshwm sim ion fluxes hloov pauv lub peev xwm ntawm daim nyias nyias ntawm lub cell postsynaptic, yog li kho cov kev hloov pauv ntawm cov ntaub ntawv hla lub synapse.
Vim li cas postsynaptic muaj peev xwm tseem ceeb?
Postsynaptic peev xwm (PSP), hloov pauv ib ntus hauv hluav taws xob polarization ntawm daim nyias nyias ntawm cov paj hlwb (neuron). … Lub peev xwm los koom ua ke ntau PSPs ntawm ntau lub synapses yog cov cuab yeej tseem ceeb ntawm cov neurons thiab hu ua summation.
Dab tsi yog qhov cuam tshuam rau ntawm lub cell postsynaptic?
Cov postsynaptic tam sim no tsim los ntawm synchronous qhib thiab kaw ntawm ion channels hloov cov membrane muaj peev xwm ntawm postsynaptic cellCov kev hloov pauv hauv qhov muaj peev xwm ua rau muaj qhov tshwm sim ntawm kev tua cov peev txheej yog excitatory, whereas cov uas txo qhov tshwm sim no yog inhibitory.
