Which statement best describes the function of anchoring junctions?

• A. They provide mechanical stability by linking the cytoskeletons of neighboring cells.
• B. They prevent any intercellular communication.
• C. They synthesize extracellular matrix components.
• D. They create diffusion barriers to molecules.

Answer: (A)

Anchoring junctions mainly provide mechanical stability by physically linking the cytoskeletons of neighboring cells. They form a strong, continuous network that distributes and resists mechanical stress, helping tissues endure stretching and pulling. Desmosomes connect intermediate filaments like keratin between cells, while adherens junctions link actin filaments to neighboring cells through cadherin-based complexes, together keeping cells firmly attached.

This isn’t about blocking communication, producing extracellular matrix, or creating diffusion barriers. Those roles belong to other junction types: gap junctions enable intercellular signaling, fibroblasts or other cells synthesize extracellular matrix, and tight junctions create diffusion barriers between cells.