Video: Dab tsi tshwm sim thaum tso acetylcholine?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Nyob rau hauv lub peripheral paj hlwb, thaum lub paj hlwb impulse tuaj txog ntawm lub davhlau ya nyob twg ntawm lub cev muaj zog neuron, acetylcholine raug tso tawm nyob rau hauv lub neuromuscular hlws ris. Thaum khi acetylcholine tshuaj , cov channel qhib thiab tso cai rau nthuav tawm sodium (Na+thiab potassium (K+) ions los ntawm kev ua pore.
Tsis tas li ntawd, yuav tso acetylcholine li cas?
Thaum lub cev muaj zog neuron tsim kom muaj peev xwm ua tau, nws mus nrawm nrawm rau ntawm cov hlab ntsha kom txog thaum nws mus txog qhov sib txuas neuromuscular, qhov uas nws pib ua cov txheej txheem electrochemical uas ua rau. acetylcholine tshuaj ua tso tawm mus rau qhov chaw nruab nrab ntawm lub davhlau ya nyob twg presynaptic thiab cov leeg nqaij.
Qhov thib ob, yuav ua li cas yog tias acetylcholine raug thaiv? Myasthenia gravis ua rau lub cev tiv thaiv kab mob los thaiv lossis rhuav tshem acetylcholine tshuaj cov receptors. Tom qab ntawd, cov nqaij ntshiv tsis tau txais cov tshuaj neurotransmitter thiab tsis tuaj yeem ua haujlwm ib txwm muaj. Tshwj xeeb, tsis muaj acetylcholine tshuaj , cov leeg tsis tuaj yeem cog lus. Cov tsos mob ntawm myasthenia gravis tuaj yeem ua rau me me mus rau mob hnyav.
Kuj Paub, yuav ua li cas tshwm sim thaum acetylcholine tso rau hauv cov hlab ntsha neuromuscular?
Thaum muaj peev xwm nqis tes ua mus txog a neuromuscular hlws ris , nws ua acetylcholine rau ua tso tawm rau hauv qhov synapse. Cov acetylcholine tshuaj khi rau nicotinic receptors tau mloog zoo ntawm lub cev muaj zog kawg phaj, ib qho chaw tshwj xeeb ntawm cov leeg nqaij fiber ntau tom qab synaptic membrane.
Dab tsi tshwm sim thaum muaj acetylcholine ntau dhau?
Tshaj tsub zuj zuj ntawm acetylcholine tshuaj (ACh) ntawm kev sib tshuam neuromuscular thiab synapses ua rau cov tsos mob ntawm ob leeg muscarinic thiab nicotinic lom. Cov no suav nrog cramps, nce salivation, lacrimation, nqaij leeg tsis muaj zog, tuag tes tuag taw, mob leeg nqaij, raws plab, thiab qhov muag tsis pom kev [1] [2] [0].
Pom zoo:
Yuav muaj dab tsi tshwm sim thaum cov tshuaj neurotransmitter raug tso tawm los ntawm presynaptic cell?
Hauv kev teb rau qhov muaj peev xwm ua tau zoo lossis muaj peev xwm ua tau hluav taws xob, lub paj hlwb tau tso tawm ntawm lub dav hlau presynaptic. Kev tso tawm cov neurotransmitter tuaj yeem txav mus los hla cov synapse kom pom los ntawm thiab khi nrog cov neeg txais khoom hauv lub paj hlwb postsynaptic
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