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Video: Dab tsi ntawm qhov kev hnov mob neuron nyob hauv cov hlab ntsha?
![Video: Dab tsi ntawm qhov kev hnov mob neuron nyob hauv cov hlab ntsha? Video: Dab tsi ntawm qhov kev hnov mob neuron nyob hauv cov hlab ntsha?](https://i.ytimg.com/vi/vGqnmyS2C7Q/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Daim duab 2. Tus txha nqaj qaum paj hlwb muaj ob leeg kev xav thiab motor axons. Somas of sensory neurons nyob rau hauv dorsal cag ganglia. Somas ntawm lub cev muaj zog neurons muaj nyob rau hauv lub ventral feem ntawm grey teeb meem ntawm tus txha caj qaum.
Ib yam li ntawd, nws tau nug, qhov twg cov neurons pom hauv lub cev?
Lub cell cev ntawm sensory neurons yog nyob hauv dorsal ganglia ntawm tus txha nqaj qaum.
Tsis tas li ntawd, dab tsi yog lub paj hlwb? A lub paj hlwb , kuj tseem hu ua tus saib xyuas paj hlwb , yog a paj hlwb uas nqa kev xav cov ntaub ntawv mus rau lub hauv paus paj hlwb (CNS) thiab tag nrho cov paj hlwb uas tuaj yeem nkag siab lossis lees paub qhov kev txhawb siab (Sab hauv lossis Sab Nraud) raug hu ua paj hlwb.
Ntxiv mus, qhov twg ntawm cov ntu hauv qab no ntawm cov leeg txha nraub qaum muaj lub paj hlwb nkaus xwb?
Tus txha nqaj qaum ganglia los yog hauv paus hauv paus ganglia muaj cov ntawm tes lub cev ntawm lub paj hlwb nkag mus rau qaum ntawm thaj av ntawd. paj hlwb - ib pawg ntawm cov fibers (axons) sab nraum CNS. Cov hlab ntsha txha nraub qaum muaj cov fibers ntawm qhov hnov thiab lub cev muaj zog neurons.
Tus qauv ntawm kev hnov qab neurons yog dab tsi?
Feem ntau sensory neurons yog pseudounipolar, lub ntsiab lus lawv muaj axon uas ceg rau hauv ob qhov txuas ntxiv-ib qho txuas nrog rau dendrites uas tau txais kev xav cov ntaub ntawv thiab lwm yam uas xa cov ntaub ntawv no mus rau tus txha caj qaum.
Pom zoo:
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Piav qhia: Cov hlab ntshav nqa ntshav nyob hauv siab los ntawm lub plawv mus rau cov kabmob thiab cov nqaij. Lawv cov phab ntsa feem ntau yog tuab dua li cov leeg. Capillaries yog qhov sib txuas ntawm cov hlab ntsha thiab cov leeg thiab me me heev, Cov ntaub so ntswg qee zaum pom tawm thiab rov nco qab los ntawm cov qog ntshav thiab rov qab los rau cov leeg ntshav
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Arterial ulcers tsim los ntawm kev puas tsuaj rau cov hlab ntsha vim tsis muaj cov ntshav ntws mus rau cov ntaub so ntswg. Venous ulcers tsim los ntawm kev puas tsuaj rau cov hlab ntsha uas tshwm sim los ntawm cov ntshav tsis txaus rov qab mus rau lub plawv. Tsis zoo li lwm qhov txhab, cov ceg mob no tuaj yeem siv sijhawm ntau lub hlis los kho, yog tias lawv zoo txhua lub sijhawm
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Cov hlab ntsha nqa ntshav tawm ntawm lub plawv; Lub ntsiab hlab ntsha yog aorta. Capillaries nqa ntshav tawm ntawm lub cev thiab pauv cov as-ham, pov tseg, thiab oxygen nrog cov ntaub so ntswg ntawm qib cellular. Cov leeg ntshav yog cov hlab ntshav uas coj cov ntshav rov qab los rau hauv lub plawv thiab tso ntshav tawm ntawm cov kabmob thiab cov ceg
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Muaj plaub hom neuroglia pom nyob hauv nruab nrab lub paj hlwb: Astrocytes - tswj cov ntshav lub hlwb teeb meem thiab khaws cov tshuaj ib puag ncig los ntawm kev siv cov ions rov qab thiab cov tshuaj xa xov mus rau lub cev. Oligodendrocytes - myelinate axons nyob rau hauv lub hauv nruab nrab lub paj hlwb thiab muab tag nrho cov txheej txheem txheej txheem