cell junctions-1HAP.pdf - Cell junctions Cell junctions are...

This preview shows page 1 - 2 out of 4 pages.

Cell junctionsCell junctionsare contact points between the plasma membranes of tissuecells.Here we consider the five most important types of cell junctions:Tight junctions,Adherens junctions,Desmosomes,Hemidesmosomes, andGap junctionsTight JunctionsTight junctionsconsist of weblike strands of transmembrane proteins thatfuse together the outer surfaces of adjacent plasma membranes to seal offpassageways between adjacent cells.Ex: Cells of epithelial tissue that lines the stomach, intestines, and urinarybladder have many tight junctions.They inhibit the passage of substances between cells and prevent the contentsof these organs from leaking into the blood or surrounding tissues.Adherens JunctionsAdherens junctions(ad-HEˉ R-ens) containplaque(PLAK), a dense layer ofproteins on the inside of the plasma membrane that attaches both to

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 4 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Fall
Professor
N/A
Tags
adherens junctions, gap junctions, important types of cell junctions

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture