cell junction

noun2

1. •
   A specialized structure that links adjacent cells together or connects cells to the extracellular matrix; crucial for tissue integrity, communication, and forming barriers; acting like channels to control substance flow and hold tissues (like skin or lining of organs) together against forces like stretching or abrasion. They enable coordinated functions, from nutrient transfer to rapid electrical signaling.
2. •
   Synonym of cell-cell junction; excludes cell-matrix junctions.