Video: Puas yog keratin yog cov ntaub ntawv nruab nrab?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Keratin cov protein suav nrog ob chav kawm loj tshaj plaws ntawm nruab nrab filament cov proteins. Cov keratin filaments thauj cov cell ntawm daim tawv nqaij mus rau extracellular matrix (ECM) ntawm lawv lub hauv paus thiab mus rau cov hlwb uas nyob ib sab ntawm lawv sab, los ntawm cov qauv hu ua hemidesmosomes thiab desmosomes, feem.
Ib qho yooj yim, puas yog collagen yog cov ntsiab lus nruab nrab?
Thawj nruab nrab filament (IF) cov protein kawm tau yog keratins. Lawv zoo li cov tsis-IF proteins myosin, fibrinogen, thiab collagen - muaj ntau thiab ntau insoluble cov ntsiab lus ntawm metazoan hlwb thiab cov ntaub so ntswg.
Tsis tas li, dab tsi yog cov piv txwv ntawm cov xov paj nruab nrab? Cov nruab nrab filaments muaj ntau haiv neeg; qee yam 65 cov noob sib cais hauv tib neeg tau txheeb xyuas. Lawv txhua tus suav nrog peb ntu: "taub hau," tus pas nrig zoo ib yam hauv nruab nrab, thiab "tus Tsov tus tw." Piv txwv ntawm nruab nrab filaments suav nrog vimentin, desmin, glial fribrillary acid protein (GFAP), neurofilaments, thiab nuclear laminins.
Kuj nug, dab tsi yog qhov nruab nrab filaments ua los ntawm?
Raws li actin filaments thiab microtubules yog cov polymers ntawm ib hom proteins (actin thiab tubulin, feem), nruab nrab filaments yog muaj li ntawm ntau cov protein uas tau hais tawm hauv ntau hom cell.
Puas yog intermediate filaments hollow?
Yog nruab nrab filaments zoo li cov hlua, microtubules tuaj yeem xav tias yog hollow kav. Cov kav dej no tau tsim los ntawm 13 txoj kab sib thooj protofilaments, txhua tus yog cov saw ntawm tubulin subunits. Qhov no ua rau tag nrho microtubule muaj kev taw qhia.
Pom zoo:
Dab tsi yog qhov nruab nrab nruab nrab txhim kho rau?
Thaum lub sijhawm embryonic kev txhim kho, lub nruab nrab lub paj hlwb (tseem hu ua mesencephalon) tshwm sim los ntawm ob lub vesicle ntawm cov hlab ntsha neural, thaum sab hauv ntawm lub raj no dhau los ua lub paj hlwb. Nws tsis faib mus rau lwm qhov chaw hauv hlwb
Dab tsi yog qhov nruab nrab nruab nrab ntawm patella?
Cov Cim Cim Bony Lub ntsej muag tom qab ntawm patella qhia nrog tus poj niam, thiab tau cim los ntawm ob sab: Lub ntsej muag nruab nrab - kos nrog lub nruab nrab nruab nrab ntawm tus poj niam
Dab tsi yog Cov Ntaub Ntawv Kev Nyab Xeeb Cov Ntaub Ntawv Quizlet?
Cov Ntaub Ntawv Kev Nyab Xeeb Khoom (MSDS) Cov ntaub ntawv uas muaj cov ntaub ntawv ntsig txog kev phom sij ntawm cov khoom thiab suav nrog kev nyab xeeb tuav thiab pov tseg cov txheej txheem
Vim li cas cov hlab ntshav nruab nrab nruab nrab siv rau venipuncture?
Nws muaj feem cuam tshuam nrog chaw kho mob raws li nws tau siv tas li rau venipuncture (noj ntshav) thiab ua qhov chaw rau txhaj tshuaj cannula. Nws txuas cov basilic thiab cephalic leeg thiab ua qhov tseem ceeb thaum siv lub siab. Nws nyob hauv qhov cub fossa superficial mus rau kev ua haujlwm aponeurosis
Cov ntaub ntawv twg yog suav tias yog ib feem ntawm tus neeg mob cov ntaub ntawv?
Tus neeg mob tus kheej cov ntaub ntawv kho mob txheeb xyuas tus neeg mob thiab muaj cov ntaub ntawv hais txog tus neeg mob keeb kwm ntawm tus kws kho mob tshwj xeeb. Cov ntaub ntawv noj qab haus huv nrog rau txhua qhov khaws cia hauv tshuab hluav taws xob ntawm cov ntawv ib txwm muaj cov cim tus neeg mob kom raug