![Calcium ua dab tsi ntawm qhov sib txuas ntawm neuromuscular? Calcium ua dab tsi ntawm qhov sib txuas ntawm neuromuscular?](https://i.answers-medical.com/preview/medical-health/14118522-what-does-calcium-do-at-the-neuromuscular-junction-j.webp)
Video: Calcium ua dab tsi ntawm qhov sib txuas ntawm neuromuscular?
![Video: Calcium ua dab tsi ntawm qhov sib txuas ntawm neuromuscular? Video: Calcium ua dab tsi ntawm qhov sib txuas ntawm neuromuscular?](https://i.ytimg.com/vi/smFAXahKelQ/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Calcium ions khi rau cov tshuaj tiv thaiv kab mob (synaptotagmin) ntawm cov kab mob sib kis, ua rau lub cev sib xyaw ua ke nrog cov xovtooj ntawm tes thiab tom qab ntawd xa cov neurotransmitter tso tawm los ntawm lub cev muaj zog neuron mus rau hauv qhov sib dhos.
Raws li txoj cai, calcium ua lub luag haujlwm hauv kev sib tshuam neuromuscular?
Calcium ua si ob qhov txawv lub luag haujlwm hauv kev tswj cov nqaij ntshiv. Thawj luag hauj lwm yog pab tso tawm ACh los ntawm cov synaptic vesicles nyob rau hauv lub motor neuron davhlau ya nyob twg. Qhov thib ob (thiab feem ntau sib tham) luag hauj lwm ntawm calcium yog los tswj txoj haujlwm ntawm cov cai tswj hwm cov protein troponin thiab tropomyosin ntawm actin.
Ib qho ntxiv, 3 feem ntawm kev sib tshuam neuromuscular yog dab tsi? 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).
Tib neeg kuj nug, yuav ua li cas tshwm sim ntawm qhov sib txuas neuromuscular?
Thaum muaj peev xwm nqis tes ua mus txog a neuromuscular hlws ris , nws ua rau acetylcholine raug tso tawm rau hauv qhov synapse no. Cov acetylcholine khi rau cov nicotinic receptors tsom mus rau lub tshuab kawg phaj, thaj chaw tshwj xeeb ntawm cov leeg nqaij fibre's post-synaptic membrane.
Plaub seem ntawm kev sib tshuam neuromuscular yog dab tsi?
- Cheebtsam.
- Synaptic kawg qhov muag teev.
- Lub phaj kawg lub cev.
- Lub synaptic cleft.
- Clinical tseem ceeb. Botulinum tshuaj lom. Curare. Cov tshuaj Anticholinesterase.
- Skeletal leeg nqaij. Neurons: Qauv thiab hom.
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