Scan 18 nov-2018
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Cellular junctions are cell structures that provide adhesion and permit communication between cells. They are mostly found on epithelial cells and are characterized by their strong attachment to one another and to extracellular matrix. The main junction forms a belt between the two membranes. This septum contains integral membrane proteins connexin and occludin that allow intercellular and paracellular transport of molecules but prevent passive flow between cells. An example is the epithelium of the human lung.
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c ommur.nic a tion beh.r..reen c:e]ls. 1here m ay be prer_.ent in other types of tissues. but
a e m ostly found on. ep ithe-lial eels .and are choro c terized by 1heir shong
i:Jttoc::hrnen t to one i::1oottier i::lnd to exfrtlc ellulcr rmalT~.
1i'fflllJu DWJ~ ~ ~ describes;, that there is a
form.ad bcmd of fight juncu is; which encircles every cell. 1he main light
jt'l"lction iorms a Mal beN!Benthe t,,..,o merri:mnes. Tlis seCll consim of ihe
irorurnembrcne 袖-ote揃ms coudiJ- and oc-dllldn and provide fn:mscelluJar
Olld parocelulol tro11Sporl of rnofecu':esr bu1 prevent p a s.s.ive ftow between
c ells:. One e~ le rs the eplthela of the Humanlung,
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Scan 18 nov-2018
- 1. bde1c:ellulcrJuncflo.ns are eel s.TUCrures that provide a dhe.5i:::>n and p.errriiit c ommur.nic a tion beh.r..reen c:e]ls. 1here m ay be prer_.ent in other types of tissues. but a e m ostly found on. ep ithe-lial eels .and are choro c terized by 1heir shong i:Jttoc::hrnen t to one i::1oottier i::lnd to exfrtlc ellulcr rmalT~. 1i'fflllJu DWJ~ ~ ~ describes;, that there is a form.ad bcmd of fight juncu is; which encircles every cell. 1he main light jt'l"lction iorms a Mal beN!Benthe t,,..,o merri:mnes. Tlis seCll consim of ihe irorurnembrcne 袖-ote揃ms coudiJ- and oc-dllldn and provide fn:mscelluJar Olld parocelulol tro11Sporl of rnofecu':esr bu1 prevent p a s.s.ive ftow between c ells:. One e~ le rs the eplthela of the Humanlung, .lONUU I DHEFtl:fiJS)ti.lHUIU N r JUNCTIIJ揃r,!'S (.lON UU IDHEFt[fiJS) , I 'I',- i.. ; .-,, .. .. . . . I 111Bi:f~l'.fl]-~ pr!l~~e-1 pa~ oC s~ ilnlemledlllfe lllt:lmed couplln; ~e("i c.tdJC1Cenl cath, itrer,;tnerang 1he ttuue.. llM!l'I or.a mr:m:iWd ro olr.w C11Un0101M1 o1 ael,ONlnl c:etllal1CI cc,,taln pro,e,ns "am 1ht- c:aa~ ram~v. 1h1.. protali'is C"OAM(:I c:,;11'1-tf o o d1nM1 a1t0d'mtln 01 ~ ,~onneJ:i'Otel()I to ~ p()inl$toVlhid't $tr'Orlg il'l1~IClie ll10m~ 001bl"td. 1he IeMI' ill. Q .~f01"l9 ~n omcing The C-ells, Et:Clll'lp3e ol lllislJ1he tldlley-tub1Ue-J., HfMOU!:~r...~oSDMf II' . -=I- "L .,. -11- I- ,. 揃I 揃 ., .j ,, ., r , ,,. ' t'. i " 揃I -1 ' ' ...~t ,I', . ' ~I I -揃.,,. .. ". I ~~~ 1he mofOftooc:ttbn ot gaptt-,ell'Oru 1.5 the ffi"ect homier c:melieadlonge otffiAJll!!fll! anci s.igl1'lllll~ul13between 1he .cell'-. tt o10'w'S dlrei::1 ltonsfer ot W'll,QU~ulta and igm r0rn -0~ t;.el 10 c:mci1hl!f.A ggp piellan C0nM!h er~01Qlr'll ncmtCI ~i:innihh bclmpll 01 a gapIun~1I0nI,lt'lit10- oo&ed llhh ~IFl1!al~ilop$11U In 0-.0 tll'l:lln, gOJ)jLOC11itirU~etr'l'III IWt 0ffl'tvOI 0-1 " '' 0(110(1 pet.e"1IICJI arttlte .-i-apllc 1ermibdl.1t1 tie tr~nuttiffed c11::rw14 Ille .:iosh!'(OOpl.: i:=.e11 wiftlo..JI ~he fi!.lat neeoodrotraeu e 01 c nl!~li'l! mi1~ . lii_,j-~ - ~n!M ~ 揃 . lil'nl . I :,. .iiiiiil~~~ I . I揃 a .., ,!揃 I 1., I.