E. 5. __ contain desmocollins and desmogleins. A. Zonula occludens B. Macula adherens C. Gap junction D. Zonula adherens E. Focal adhesions which of the following is not a function of epithelial tissue

The correct answer is E. Focal adhesions.<br /><br />Focal adhesions are specialized structures that allow cells to adhere to the extracellular matrix and to each other. They are not a function of epithelial tissue, but rather a feature of other types of tissues, such as connective tissue.<br /><br />The other options are all functions of epithelial tissue:<br /><br />A. Zonula occludens (tight junctions) are specialized structures that prevent the passage of molecules and ions through the space between cells, forming a barrier that separates the apical and basolateral surfaces of epithelial cells.<br /><br />B. Macula adherens (adherens junctions) are specialized structures that link the actin cytoskeleton of one cell to that of an adjacent cell, providing mechanical stability to the tissue.<br /><br />C. Gap junctions are specialized structures that allow the passage of ions and small molecules between cells, allowing for communication and coordination of cellular activities.<br /><br />D. Zonula adherens (adherens junctions) are specialized structures that link the actin cytoskeleton of one cell to that of an adjacent cell, providing mechanical stability to the tissue.<br /><br />Therefore, the correct answer is E. Focal adhesions.