Video: Puas yog collagen yog qhov nruab nrab filament?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
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.
Ib sab ntawm no, puas yog keratin yog cov ntsiab lus nruab nrab?
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 tus kuj tseem yuav nug tau tias, cov ntaub ntawv nruab nrab ua los ntawm dab tsi? 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.
Ib qho ntxiv, puas yog myosin yog cov ntsiab lus nruab nrab?
Nruab nrab filament . Thaum xub thawj ' nruab nrab 'vim tias lawv qhov nruab nrab txoj kab nruab nrab (10 nm) yog nruab nrab ntawm cov nqaim microfilaments (actin) thiab dav dua myosin cov filaments pom hauv cov leeg nqaij, txoj kab uas hla ntawm nruab nrab filaments tam sim no feem ntau piv rau actin microfilaments (7 nm) thiab microtubules (25 nm).
Dab tsi yog cov txheej txheem nruab nrab siv rau?
Tej zaum txoj haujlwm tseem ceeb tshaj plaws ntawm nruab nrab filaments yog muab txhua yam kev txhawb nqa rau cov plasma membrane qhov twg nws los rau hauv kev sib cuag nrog lwm cov hlwb los yog nrog cov extracellular matrix. Tsis zoo li microfilaments thiab microtubules, nruab nrab filaments tsis koom nrog kev txav ntawm tes.
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
Qhov nruab nrab nyob nruab nrab txhais li cas?
Medial hais txog txhua yam mus rau nruab nrab ntawm lub cev. (Qhov tsis sib xws yog ib sab.) Qhov sib thooj hais txog lub ntsiab lus ze rau qhov taw tes siv. (Qhov sib txawv yog nyob deb.) Peripheral hais txog txhua yam uas nyob deb ntawm qhov chaw thiab paub qhov sab ntug ntawm yam
Qhov nruab nrab nruab nrab ntawm tus ncej puab ua dab tsi?
(Qhov nruab nrab nruab nrab yog nyob hauv nruab nrab txoj cai.) Qhov nruab nrab nruab nrab ntawm tus ncej puab yog ib qho ntawm fascial compartments ntawm tus ncej puab thiab muaj lub duav adductor nqaij thiab cov leeg gracilis. Lub paj hlwb obturator yog thawj lub paj hlwb muab cov khoom no. Obturator artery yog cov ntshav xa mus rau tus ncej puab nruab nrab
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
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