junctions

tight junction

-cell junction that forms a continuous, watertight seal between cells, primarily in epithelial and endothelial tissues

-regulate the passage of molecules through the space between cells,

Gap junctions

-protein-lined channels connecting the cytoplasm of adjacent cells

-allows for direct exchange of ions and small molecules

anchoring junctions

-cell structures that physically link cells to each other and to the extracellular matrix

-provides structural support and tissue integrity

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