![Dab tsi yog spindle fibers? Dab tsi yog spindle fibers?](https://i.answers-medical.com/preview/medical-health/13912024-what-is-spindle-fibers-j.webp)
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Spindle fibers yog filaments uas tsim cov mitotic ntxaiv hauv kev faib cell, piv txwv li mitosis thiab meiosis. Lawv feem ntau koom nrog kev txav chaw thiab cais cov chromosomes thaum lub sijhawm faib nuclear. Ua ke, lawv tsim a ntxaiv -shaped tus qauv, uas yog qhov dav tshaj plaws hauv nruab nrab ces tapers ntawm ob qho kawg.
Thiaj li, dab tsi yog spindle fiber thiab nws ua haujlwm yog dab tsi?
Spindle fibers tsim cov qauv protein uas faib cov cov khoom siv hauv lub cev. Spindle yog qhov tsim nyog los sib faib sib npaug cov chromosomes hauv niam txiv lub cell rau hauv ob tus ntxhais lub cev thaum ob hom kev faib nuclear: mitosis thiab meiosis. Thaum lub sij hawm mitosis, ntxaiv fibers hu ua cov mitotic ua ntxaiv.
Ib qho ntxiv, spindle fiber ntau hauv biology yog dab tsi? Spindle fibers yog filaments uas tsim cov mitotic ntxaiv hauv kev faib cell, piv txwv li mitosis thiab meiosis. Lawv feem ntau koom nrog kev txav chaw thiab cais cov chromosomes thaum lub sijhawm faib nuclear. Spindle fibers yog tsim los ntawm microtubules.
Ntxiv mus, dab tsi yog spindle fibers ua los ntawm?
Spindle fibers yog cov qauv protein uas tsim thaum ntxov hauv mitosis, lossis faib cell. Lawv suav nrog microtubules uas yog los ntawm cov centrioles, ob lub cev zoo li lub log nyob hauv thaj tsam centromere ntawm tes. Lub centromere tseem paub tias yog microtubule teeb tsa chaw.
Qhov txawv ntawm microtubules thiab spindle fibers yog dab tsi?
Cov protein ntev fibers hu ua microtubules txuas los ntawm cov centrioles hauv txhua qhov kev qhia tau, tsim qhov hu ua a ntxaiv . Qee qhov ntawm microtubules txuas tus ncej rau cov chromosomes los ntawm kev txuas rau cov protein complexes hu ua kinetochores.
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Spindle fibers tsim cov qauv protein uas faib cov khoom siv hauv lub cev. Spindle yog qhov tsim nyog los sib faib cov chromosomes hauv niam txiv lub cell rau hauv ob tus ntxhais lub cev thaum ob hom kev faib nuclear: mitosis thiab meiosis. Thaum lub sij hawm mitosis, spindle fibers raug hu ua mitotic spindle
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Spindle fibers tsim cov qauv protein uas faib cov khoom siv hauv lub cev. Cov ntxaiv yog qhov tsim nyog los sib faib cov chromosomes hauv niam txiv rau hauv ob tus ntxhais lub cev thaum ob hom nucleardivision: mitosis thiab meiosis. Thaum lub sij hawm mitosis, spindle fibers yog hu ua mitotic spindle
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Somatic efferent neurons yog lub cev muaj zog neurons uas ua rau muaj kev cuam tshuam los ntawm tus txha caj qaum mus rau cov leeg pob txha. Visceral afferent neurons yog cov neurons hnov qab uas ua rau impulses pib hauv receptors hauv cov leeg nqaij & cov leeg mob
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Tau txais tus nqi kawg ntawm cov tsav tsheb laum tsis siv neeg Feem ntau cov tsav tsheb laum tsis muaj qhov tshwj xeeb hu ua spindle lock. Thaum xaiv spindle xauv, lub cav lub cav ntxaiv raug kaw thiab yog li cov chuck thiab cov ntsia hlau los yog laum ntsis tig tsis tau
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Lub centromere tseem hu ua microtubuleorganizing chaw. Cov spindle fibers muab lub hauv paus thiab txhais tau tias ntawm kev txuas uas ua kom muaj cov chromosomes koom ua ke, sib koom ua ke thiab sib koom ua ke thaum lub sijhawm tag nrho cov txheej txheem ntawm mitosis, txo qis qhov tshwm sim ntawm aneuploidy, lossis tus ntxhais lub hlwb nrog cov tsis ua tiav ntawm chromosomes