Dictionary > Macula adherens

Macula adherens

Definition
noun
A type of anchoring junction between neighboring cells forming a plaquelike site on the cell surface
Supplement
Anchoring junctions are cell junctions that are anchored to one another and attached to components of the extracellular matrix. They are important in keeping the cells together and structural cohesion of tissues. They are commonly found in tissues that are prone to constant mechanical stress, e.g. skin and heart. There are three types of anchoring junctions. They are desmosomes, hemidesmosomes, and adherens junctions.
Both desmosomes and hemidesmosomes use intermediate filaments as their cytoskeletal anchor. However, the transmembrane linker of desmosomes is cadherin whereas that of hemidesmosomes is integrins. Desmosomes link cell to another cell. Hemidesmosomes link cell to the extracellular matrix.
Desmosomes are typically found in simple and stratified squamous epithelium. They aid in resisting shearing forces. They are also found between myocytes where they bind these cells to one another. They may appear as belt-like since they encircle the cell completely. Thus, they are referred to as belt desmosomes. Other desmosomes appear as spot-like, and thus, are called spot desmosomes.
See also:


You will also like...

Peppered moth ("Biston betularia") melanic and light form
Examples of Natural Selection

Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..

kinesin motor proteins transporting molecules across microtubules
Movement of Molecules Across Cell Membranes

Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..

An artistic depiction of Dunkleosteus fish
Fish

The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

primitive arthropods
Arthropods

The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..

Physical growth
Physical Development in Humans

This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutori..

genes controlling growth and development
Control of Growth & Development

Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..