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Video: Puas yog cov hlab ntsha muaj qhov cuam tshuam lossis muaj txiaj ntsig?
![Video: Puas yog cov hlab ntsha muaj qhov cuam tshuam lossis muaj txiaj ntsig? Video: Puas yog cov hlab ntsha muaj qhov cuam tshuam lossis muaj txiaj ntsig?](https://i.ytimg.com/vi/9IFzuDSrQX4/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cranial qab haus huv Kuv ( olfactory ), II (optic), thiab VIII (vestibulocochlear) raug txiav txim siab dawb paug tsis nyiam . Cranial qab haus huv III (oculomotor), IV (trochlear), VI (abducens), XI (txha nraub qaum), thiab XII (hypoglossal) yog cov dawb huv zoo.
Tsis tas li kom paub yog, yam dab tsi ntawm cov hlab ntsha yog lub paj hlwb?
Olfactory qab haus huv Kuj tseem hu ua CN1, lub paj hlwb yog thawj ntawm 12 cranial qab haus huv nyob hauv taub hau. Nws xa cov ntaub ntawv nkag siab rau lub hlwb , thiab nws yog lub luag haujlwm rau qhov hnov tsw. Cov hlab ntsha cov tshuaj tiv thaiv kab mob tau txais nyob hauv qhov mucosa ntawm lub qhov ntswg kab noj hniav.
Qhov thib ob, puas yog lub paj hlwb 8 hnov lossis lub cev muaj zog? Cov lus ntawm cranial qab haus huv
Tsis yog | Lub Npe | Kev nkag siab, lub cev muaj zog, lossis ob qho tib si |
---|---|---|
V | Trigeminal | Ob lub siab thiab lub cev muaj zog |
VI | Abducens | Feem ntau lub cev muaj zog |
VII | Ntsej muag | Ob lub siab thiab lub cev muaj zog |
VIII | Vestibulocochlear Hauv cov ntawv qub: hnov, hnov suab. | Feem ntau yog kev xav |
Ib tus kuj tseem yuav nug, puas yog lub paj hlwb ua haujlwm ntawm CNS?
Txhua tus cranial paj hlwb yog khub thiab muaj nyob ntawm ob sab. Lub cranial qab haus huv raug suav hais tias yog ib feem ntawm lub paj hlwb ib puag ncig (PNS), txawm hais tias nyob ntawm qib kev teeb tsa olfactory (I), optic (II), thiab trigeminal (V) qab haus huv raug txiav txim siab ntau dua ib feem ntawm lub hauv paus paj hlwb ( CNS ).
Dab tsi yog 3 hom cranial qab haus huv?
Muaj peb lub paj hlwb uas muaj lub ntsej muag tseem ceeb ua haujlwm. Txuas mus rau Sensory. Cranial paj I, Olfactory , hloov tus ntxhiab tsw, lub paj hlwb II, Kho qhov muag, hloov lub zeem muag. Cranial paj huam VIII, Acoustovestibular, hloov pauv kev hnov lus thiab sib npaug.
Pom zoo:
Dab tsi yog qhov txiaj ntsig ib txwm rau PaO 2 Dab tsi yog qhov txiaj ntsig rau kev txiav txim siab qhov hnyav ntawm hypoxemia?
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Zoo li feem ntau qhov kev kho mob ib txwm muaj txiaj ntsig thiab ntau yam, lub ntsiab lus tuaj yeem sib txawv me ntsis, tab sis feem ntau cov ntsiab lus hauv qab no siv: Ua rau me me hypoxemia: PaO2 = 60 txog 79 mmHg. Qhov nruab nrab hypoxemia: PaO2 = 40 txog 59 mmHg. Hypoxemia hnyav: PaO2 <40 mmHg
Cov hlab ntsha lossis cov hlab ntsha puas khov dua?
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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
Puas yog cov hlab ntsha uas muaj oxygenated ntshav lossis cov hlab ntsha?
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