Video: Dab tsi yog medullary rays hauv cov nroj tsuag?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Hauv botany, medullary rays (pith rays los yog ntoo rays ) yog cov ntawv los yog ribbons ntawm cov hlwb khiav los ntawm sab hauv cog mus rau sab nraud. Ntawd yog, lawv khiav ntawm txoj cai kaum rau xylem thiab phloem, uas khiav vertically. Thaum lub cog yog ciaj sia, cov no medullary cov hlwb tseem ciaj sia.
Hais txog qhov no, medullary ray nyob qhov twg?
Nyob rau hauv anatomy, tus medullary rays (Ferrein's pyramid) yog qhov nruab nrab ntawm lub cortical lobule los yog lub raum lobule, uas muaj ib pab pawg ntawm cov raj ncaj nraim txuas nrog cov ducts. Lawv lub npe muaj peev xwm ua rau tsis meej pem - " medullary "hais txog lawv lub hom phiaj, tsis yog lawv qhov chaw.
Tsis tas li ntawd, medullary rays thiab lawv txoj haujlwm yog dab tsi? Cov no medullary lub pith rays Nws yog ib qho tseem ceeb rau lub radial conduction ntawm dej, minerals thiab lwm yam organic tshuaj. Lawv thauj cov khoom ntawm qhov chaw mus rau qhov chaw. Cov no rays tseem hu ua vascular rays lub pith rays.
Tsis tas li ntawd, txoj haujlwm ntawm rays hauv cov nroj tsuag yog dab tsi?
npe Botany. ib tug radiate band ntawm parenchyma nyob rau hauv lub thib ob xyem txuas mus rau theem nrab phloem ntawm qia ntawm tej vascular nroj tsuag, tsim los ntawm cov cambium thiab pab rau cov cia ntawm cov khoom noj thiab kev coj noj coj ua ntawm nutriments.
Koj txhais li cas los ntawm theem nrab medullary rays?
Secondary medullary rays yog daim phiaj ntsug ntawm parenchyma hlwb khiav radially los ntawm lub tog raj kheej ntawm cov hlab ntsha hauv cov stems thiab cov hauv paus hniav ntawm cov nroj tsuag. Extensions ntawm cov medulla , ntawm cov vascular bundles, hu ua Medullary rays . Medullary rays khaws thiab thauj khoom noj khoom haus.
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