cov leeg nqaij, cov hlwv tshwj xeeb hu ua intercalated discs (gap junctions) txuas cov hlwb ua ke thiab txhais lawv ciam teb. Intercalated discs yog lub portal loj rau kev sib txuas lus ntawm lub plawv-rau-hlwb, uas yuav tsum tau rau kev sib koom ua ke ntawm cov leeg nqaij thiab kev saib xyuas kev ncig.
Yuav ua li cas sib txuas yog ib qho kev sib txuas sib txuas?
qauv. Intercalated discs yog cov txheej txheem nyuaj uas txuas cov kab mob plawv uas nyob ib sab. Peb hom kev sib txuas ntawm tes tau lees paub tias ua ib qho kev sib txuas sib txuas yog desmosomes, fascia adherens junctions, thiab adherens junctions.
Dab tsi yog qhov txawv ntawm intercalated discs thiab qhov sib txawv?
Ib qhov sib txawv ntawm cov kab sib txuas ntawm cov leeg mob plawv fibers uas tso cai rau cov depolarizing tam sim no uas tsim los ntawm cations ntws los ntawm ib lub plawv cov leeg mus rau lwm qhov. … Intercalated discs yog ib feem ntawm lub plawv mob sarcolemma thiab lawv muaj qhov sib txawv junctions thiab desmosomes.
Yuav ua li cas sib txawv junctions thiab intercalated discs thiab contraction ntawm lub plawv?
Gap junctions nyob rau hauv lub intercalated disks cia impulses kis tau los ntawm ib lub plawv mob hlwb mus rau lwm tus, cia sodium, potassium, thiab calcium ions ntws ntawm cov hlwb nyob ib sab, propagating qhov kev txiav txim. muaj peev xwm, thiab ua kom muaj kev sib koom ua ke.
Dab tsi yog qhov sib txuas ntawm cov leeg plawv?
Gap junctions yogmembrane channels uas kho cov cell-rau-cell txav ntawm ions thiab me me metabolites. Nyob rau hauv lub plawv, qhov sib txawv junctions ua lub luag haujlwm tseem ceeb hauv impulse conduction. … Nyob rau hauv cov ntaub so ntswg tshwj xeeb ntawm lub plawv, Cx45 pom nyob rau hauv lub atrioventricular node thiab nyob rau hauv nws bundles.
