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What is the defintion of the term maculae adherentes?

What is the defintion of the term maculae adherentes?

Grade:12

1 Answers

Adarsh
733 Points
4 years ago
Maculae adherentes otherwise known as desmosomes are limited, plaque-like areas of particularly strong intercellular contact. They can be found anywhere on the surface of the cell. In epithelial cells, there may be a circumferential row of desmosomes parallel to the intermediate and tight junctional
zones, an arrangement that forms the third, most basally situated, component of the epithelial apical junctional complex. The intercellular gap is nearly 25 nm, and is filled with electron-dense filamentous material running transversely across it and is also marked by a series of densely staining bands running parallel to the cell surfaces. Adhesion is mediated by calcium-dependent adhesion molecules such as desmoglein, desmocollin and cadherins.
 
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