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Cell junction facts for kids

Kids Encyclopedia Facts

Cell junctions join cells in some biological tissues.

They have long protein chains, The proteins keep connections between neighbouring cells or between a cell and other structures. They also control substance transport outside cell surfaces.

Cell junction simplified en
Example of some cell junctions

Vertebrates have three main types of cell junction:

  • Adherens junctions: holds cells together and provides tissues with structural support. They are common where mechanical stress occurs eg. skin or heart
  • Gap junctions: allows for chemical communication between neighbouring cells
  • Tight junctions: regulate movement of water and liquids between epithelial layers

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