Video: Yuav ua li cas tus neuron ntawm kev sib tshuam neuromuscular?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Nws yog nyob ntawm neuromuscular hlws ris tias lub cav hlwb muaj peev xwm xa lub teeb liab mus rau cov leeg nqaij, ua rau cov leeg sib zog. Kev khi ntawm ACh rau tus neeg txais khoom tuaj yeem ua rau cov leeg nqaij tawg, ua rau qhov cascade uas thaum kawg ua rau cov leeg sib zog.
Ua li no, dab tsi yog qhov kev xa xov ntawm neuromuscular hlws ris?
Daim ntawv tshwj xeeb no ntawm synapse ntawm lub cev muaj zog neuron axon thiab cov leeg nqaij hu ua a neuromuscular hlws ris . Lub sij hawm tuaj txog ntawm lub paj hlwb impulse ntawm neuromuscular hlws ris ua rau ntau txhiab ntawm cov hnab me me (hnab) ntim nrog neurotransmitter hu ua acetylcholine yuav tsum tau tso tawm los ntawm cov lus qhia axon rau hauv synapse.
yuav ua li cas cov leeg nqaij muaj peev xwm tshwm sim ntawm kev sib tshuam neuromuscular? Kev ua haujlwm ntawm cov leeg tuaj yeem tshwm sim ntawm kev sib tshuam neuromuscular ( NMJ ), synapse ntawm somatic lub cev muaj zog neuron thiab lub cev pob txha nqaij fiber ntau. Ob lub neurons lossis neuron thiab lub hom phiaj ntawm tes tau sib cais los ntawm qhov sib txawv, lossis cov lus sib dhos. Neurotransmitters txuas tus kis ntawd. Cov neurotransmitter ntawm a NMJ yog acetylcholine (ACh).
dab tsi yog 3 ntu ntawm kev sib tshuam neuromuscular?
Kom yooj yim thiab nkag siab, tus qauv ntawm NMJ tuaj yeem muab faib ua peb qhov tseem ceeb : ib feem presynaptic (lub dav hlau dav dav), ntu ntu postsynaptic (lub cev lub cev kawg), thiab thaj chaw nruab nrab ntawm cov hlab ntsha dav dav thiab lub cev kawg ntawm lub cev (synaptic cleft).
Dab tsi yog cov khoom siv ntawm kev sib tshuam neuromuscular?
Lub neuromuscular hlws ris muaj plaub hom cell: lub cev muaj zog neuron, davhlau ya nyob twg Schwann cell, pob txha nqaij fiber ntau thiab kranocyte, nrog lub cev muaj zog neuron thiab nqaij fiber cais los ntawm qhov sib txawv hu ua synaptic cleft.
Pom zoo:
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Thaum qhov muaj peev xwm ua tau mus txog qhov sib txuas neuromuscular, nws ua rau acetylcholine raug tso tawm rau hauv qhov kev sib txuas no. Cov acetylcholine khi rau cov nicotinic receptors concentrated nyob rau hauv lub motor kawg phaj, ib qho chaw tshwj xeeb ntawm cov nqaij fibers lub post-synaptic membrane