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Explain how are the functional units are connected

Answer»

if this functional UNIT refers to cell ,then cells are closely packed ,their are certain cellular junctions that connect one cell to other cellsExplanation:Cell junctions are a class of cellular structures consisting of multiprotein complexes that provide CONTACT or adhesion between neighboring cells or between a cell and the extracellular matrix in animals. They also maintain the paracellular barrier of epithelia and control paracellular transportDesmosomes are protein ATTACHMENTS between adjacent cells. ... Tight junctions are tightly stitched seams between cells. ... Gap junctions are narrow tunnels between cells that consist of proteins CALLED connexons



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