![Vim li cas cov hauv paus plaub hau tsuas yog nyob rau thaj tsam ntawm kev loj hlob? Vim li cas cov hauv paus plaub hau tsuas yog nyob rau thaj tsam ntawm kev loj hlob?](https://i.answers-medical.com/preview/medical-health/14076196-why-are-root-hairs-only-in-the-zone-of-maturation-j.webp)
Video: Vim li cas cov hauv paus plaub hau tsuas yog nyob rau thaj tsam ntawm kev loj hlob?
![Video: Vim li cas cov hauv paus plaub hau tsuas yog nyob rau thaj tsam ntawm kev loj hlob? Video: Vim li cas cov hauv paus plaub hau tsuas yog nyob rau thaj tsam ntawm kev loj hlob?](https://i.ytimg.com/vi/44r41LMQ5yQ/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Ua cas nej ho xav li ntawd hauv paus plaub hau tshwm sim tsuas yog nyob rau hauv cheeb tsam ntawm maturation ? Lawv nce saum npoo av thiab lawv yog ib qho tseem ceeb nto rau hauv paus . Kev ua haujlwm ntawm hauv paus plaub hau yog kom nce thaj tsam ntawm hauv paus thiab nqus feem ntau ntawm cov nroj tsuag dej thiab cov as-ham.
Ib yam li ntawd, nws raug nug, vim li cas thiaj tsis muaj cov plaub hau hauv paus ua ntej thaj tsam ntawm kev loj hlob?
Tsim. Cov plaub hau cell yog outgrowths ntawm qhov ntxeev ntawm cov nroj tsuag hauv paus . Lawv pom xwb nyob rau hauv cov thaj tsam ntawm kev loj hlob , thiab tsis cov cheeb tsam ntawm elongation , tej zaum vim tej cag plaub hau uas tshwm sim yog sheared tawm li cov hauv paus elongates thiab txav mus los ntawm cov av.
Ib yam li ntawd, qhov tseem ceeb ntawm kev muaj cov hauv paus plaub hau hauv cov cag ntoo yog dab tsi? Cov plaub hau hauv paus ua zoo li daim txhuam cev hauv av. Lawv nqus tau cov as-ham thiab dej uas tau xa los ntawm qhov ntxeev ntawm tsob ntoo lub hauv paus. Qhov tseeb tias muaj ntau cov hauv paus plaub hau ntawm txhua lub hauv paus ua rau cov dej ntau ntxiv thiab cov as -ham cov nroj tsuag tuaj yeem nqus tau los ntawm cov av.
Ua raws li qhov no saib, thaj tsam ntawm kev loj hlob hauv paus yog dab tsi?
Zone ntawm maturation Nws tau yooj yim lees paub vim muaj ntau hauv paus cov plaub hau uas txuas mus rau hauv av raws li outgrowths ntawm ib tug epidermal hlwb. Lawv zoo heev nce qhov nqus dej ntawm hauv paus thaum lub sij hawm loj hlob thaum loj npaum li cas ntawm cov dej thiab cov as-ham xav tau.
Cov hauv paus plaub hau loj tuaj nyob qhov twg?
cov cell ntawm cov epidermis tsim hauv paus plaub hau ze cov hauv paus apex. Cov hlwb no yog Feem ntau nyias-walled, nyob rau hauv sib piv rau cov hlwb ntawm lub cortex, pw hauv qab ntawm lub nto, uas thaum kawg yuav ua heev tuab-walled. Cov hauv paus plaub hau muaj qhov tseem ceeb hauv kev nqus dej thiab cov as-ham thiab hauv kev txuas ntawm…
Pom zoo:
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Tej zaum nws yuav tshwm sim los ntawm papilla ntawm cov plaub hau - hauv paus -sib faib hauv nws tus kheej kom tom qab ntawd tsim ntau cov plaub hau plaub hau, lossis los ntawm ntau cov plaub hau papillae fusing ua ke. " Ib qhov kev xav zaum kawg yog tias cov kab mob hauv lub cev - "embryos" ntawm cov hauv paus -tau rov ua haujlwm los tsim ntau yam khoom
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Qhov sib txawv ntawm cov hauv paus plaub hau thiab hauv paus plaub hau yog dab tsi? Lub hauv paus yog lub teeb ntawm qhov kawg ntawm txhua txoj hlua ntawm cov plaub hau. Lub hauv paus yog qhov qhib hauv tawv taub hau uas tsim cov plaub hau-hauv paus ntawm cov plaub hau txuas rau hauv lub hauv paus
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Kev sib txawv ntawm tes tau tshwm sim hauv thaj tsam ntawm kev loj hlob. Nov yog qhov uas cov hlwb siv tus kheej hais txog dab tsi lawv yuav ua haujlwm nyob rau hauv cov nroj tsuag cov hauv paus hniav. Cov cell dhau los ua parenchyma cells, khaws thiab txav cov as -ham. Los yog, lawv yuav dhau los ua cov kab mob sclerencyma, uas dhau los ua ib feem ntawm phab ntsa ntawm tes
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Cov plaub hau grey txawv ntawm lwm cov plaub hau xim li cas? hais txog cov duab ntawm cov plaub hau thiab tau piav raws li ncaj, laim ntoom, curly lossis curly heev