Dab tsi tshwm sim tshwm sim ntawm kev sib tshuam neuromuscular uas ua rau cov leeg sib cog lus?
Dab tsi tshwm sim tshwm sim ntawm kev sib tshuam neuromuscular uas ua rau cov leeg sib cog lus?

Video: Dab tsi tshwm sim tshwm sim ntawm kev sib tshuam neuromuscular uas ua rau cov leeg sib cog lus?

Video: Dab tsi tshwm sim tshwm sim ntawm kev sib tshuam neuromuscular uas ua rau cov leeg sib cog lus?
Video: Kev tshwm sim niaj nub nim no txawv kawg nksug le nawb ib tsoom py 2024, Cuaj hlis
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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. Acetylcholine khi rau nicotinic receptors concentrated nyob rau hauv lub motor kawg phaj, ib qho chaw tshwj xeeb ntawm cov nqaij fiber ntau post-synaptic membrane.

Tsis tas li ntawd, dab tsi tshwm sim ntawm kev sib tshuam neuromuscular?

A neuromuscular hlws ris (los yog myoneural kev sib tshuam ) yog tshuaj synapse tsim los ntawm kev sib cuag ntawm lub cev neuron thiab cov leeg nqaij. Nws nyob ntawm neuromuscular hlws ris tias lub cev muaj zog neuron muaj peev xwm xa cov teeb liab mus rau cov leeg nqaij fiber ntau, ua rau cov leeg mob.

Dab tsi neurotransmitter cuam tshuam nrog neuromuscular hlws ris? acetylcholine tshuaj

Yog li ntawd, dab tsi yog qhov neuromuscular junction?

Cov neuromuscular hlws ris ( NMJ ) yog qhov chaw sib txuas lus nruab nrab ntawm lub cev muaj zog axons thiab cov leeg nqaij. Nws yog muaj los ntawm plaub hom tshwj xeeb ntawm tes: lub cev muaj zog neurons, Schwann cells, cov leeg nqaij thiab tsis ntev los no tau pom kranocytes.

Dab tsi yog 3 qhov chaw 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 (ntsuab davhlau ya nyob twg), lub postsynaptic ib feem (motor endplate), thiab ib cheeb tsam ntawm lub paj hlwb thiab lub cev muaj zog endplate (synaptic cleft).

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