Intercellular junctions koom nrog cov hlwb epithelial rau ib leeg thiab cov ntaub so ntswg uas nyob ib sab; qee leej muaj npe los ntawm lawv hom thiab qee qhov los ntawm lawv cov duab.
Kev sib txuas ntawm tes sib txuas nyob qhov twg?
Desmosomes txuas cov hlwb uas nyob ib sab thaum cadherins hauv cov plasma membrane txuas rau nruab nrab filaments. Zoo ib yam li plasmodesmata, qhov sib txawv junctions yog cov kab ntawm cov hlwb uas nyob ib sab uas tso cai rau kev thauj cov ions, cov as-ham, thiab lwm yam khoom.
Kev sib tshuam sib txuas li cas?
Gap junctions yog kev sib txuas tshwj xeeb ntawm cov cell ntawm ntau hom tsiaj. Lawv ncaj qha txuas lub cytoplasm ntawm ob lub hlwb, uas tso cai rau ntau yam molecules, ions thiab hluav taws xob impulses kom ncaj qha hla dhau lub rooj vag tswj ntawm cov hlwb.
3 hom kev sib txuas ntawm tes yog dab tsi?
Peb hom kev sib tshuam ntawm kev sib tshuam tuaj yeem raug qhov txawv raws li lawv txoj haujlwm:
- Tight or occluding junctions.
- Adherent lossis anchoring junctions, suav nrog desmosomes thiab hemidesmosomes.
- Gap junctions.
xeb sib txuas li cas?
Cell junctions
Peb txoj hauv kev tseem ceeb rau cov hlwb txuas nrog ib leeg yog: gap junctions, nruj junctions, thiab desmosomes. Cov kev sib tshuam no muaj lub hom phiaj sib txawv, thiab pom muaj nyob hauv ntau qhov chaw.
