Which of the following is the function of tight junctions?

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Communication among cells

Perform cementing to keep neighbouring cells together

Transmit information through chemicals to other cells

Stop substances from leaking across a tissue

answer is B.

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Detailed Solution

Tight junctions, also known as occluding junctions, are specialised junctions between adjacent cells in epithelial and endothelial tissues. They form a continuous, impermeable barrier that seals the intercellular space between cells, preventing the leakage of substances between cells. Tight junctions play a crucial role in maintaining the integrity and selective permeability of epithelial and endothelial barriers, such as those found in the epithelium lining the gastrointestinal tract, urinary tract, and blood vessels.

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