![LMN thiab UMN yog dab tsi? LMN thiab UMN yog dab tsi?](https://i.answers-medical.com/preview/medical-health/14026356-what-is-lmn-and-umn-j.webp)
Video: LMN thiab UMN yog dab tsi?
![Video: LMN thiab UMN yog dab tsi? Video: LMN thiab UMN yog dab tsi?](https://i.ytimg.com/vi/_9-40PVJzO0/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Upper lub cev muaj zog neurons ( UMN ) nyob rau hauv lub hlwb thiab lub hlwb thiab xa lawv cov axons hauv qaum qaum mus rau innervate qis lub cev muaj zog neurons ( LMN ). Tsawg lub cev muaj zog neurons ( LMN ) nyob hauv lub raj cua ntawm tus txha nqaj qaum thiab xa lawv cov axons mus rau ib puag ncig mus rau sab hauv cov leeg pob txha.
Yog li ntawd, qhov txawv ntawm UMN thiab LMN yog dab tsi?
Tag nrho cov neurons pab txhawb rau lub pyramidal thiab extrapyramidal systems yuav tsum hu ua lub cev muaj zog neurons ( UMN ). Cov hlwb hauv ntej thiab cov neurons cuam tshuam hauv lub cev muaj zog nuclei ntawm qee cov hlab ntsha cranial hu ua qis lub cev muaj zog neurons ( LMN ). Axons ntawm cov hlwb no ua rau nce mus rau peripheral lub paj hlwb.
Ib qho ntxiv, puas yog lub paj hlwb UMN lossis LMN? Taw qhia rau LMNs Lub cev ntawm lub cev ntawm a LMN nyob rau hauv lub ventral horn ntawm tus txha caj qaum los yog lub hlwb lub cev muaj zog nuclei ntawm tus cranial qab haus huv uas muaj lub cev muaj zog. Yog li ntawd, lub cell lub cev ntawm a LMN nyob hauv nruab nrab lub paj hlwb (CNS).
Kuj Paub, dab tsi qis dua thiab qis dua lub cev muaj zog neurons?
Tsav tsheb neurons yog cov paj hlwb hauv koj lub hlwb thiab tus txha caj qaum uas tswj kev txav mus los. Upper motor neurons nyob rau hauv koj lub hlwb thiab tus txha caj qaum. Lawv xa cov cim rau qis lub cev muaj zog neurons . Tsawg lub cev muaj zog neurons nyob hauv koj lub paj hlwb thiab tus txha caj qaum.
Dab tsi yog qhov qis zog neuron?
Txo lub cev muaj zog neuron : Ib lub paj hlwb uas tawm ntawm qaum qaum mus rau cov leeg. Cell lub cev ntawm a qis lub cev muaj zog neuron nyob hauv tus txha nqaj qaum thiab nws qhov kev txiav tawm yog nyob hauv cov leeg pob txha. Qhov poob ntawm qis lub cev muaj zog neurons ua rau tsis muaj zog, twitching ntawm cov leeg (fasciculation), thiab poob ntawm cov leeg nqaij (muscle atrophy).
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