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Question
The junctions which help to stop substances from leaking across a tissue is
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Solution
The correct option is C Tight junctions
Tight junctions seal adjacent epithelial cells in a narrow band just beneath their apical surface. They consist of a network of claudins and other proteins. Tight junctions perform two vital functions: They limit the passage of molecules and ions through the space between cells.
Adherens junctions provide strong mechanical attachments between adjacent cells.
Gap junctions are clusters of intercellular channels that allow direct diffusion of ions and small molecules between adjacent cells.
Desmosomes are intercellular junctions that tether intermediate filaments to the plasma membrane.
Tight junctions seal adjacent epithelial cells in a narrow band just beneath their apical surface. They consist of a network of claudins and other proteins. Tight junctions perform two vital functions: They limit the passage of molecules and ions through the space between cells.
Adherens junctions provide strong mechanical attachments between adjacent cells.
Gap junctions are clusters of intercellular channels that allow direct diffusion of ions and small molecules between adjacent cells.
Desmosomes are intercellular junctions that tether intermediate filaments to the plasma membrane.
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