junctional complex - определение. Что такое junctional complex
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Что (кто) такое junctional complex - определение

A CELLULAR COMPONENT THAT FORMS A SPECIALIZED REGION OF CONNECTION BETWEEN TWO OR MORE CELLS, OR BETWEEN A CELL AND THE EXTRACELLULAR MATRIX, OR BETWEEN TWO MEMBRANE-BOUND COMPONENTS OF A CELL, SUCH AS FLAGELLA.
Junctional complex; Cell junctions; Intercellular junctions; Cell-matrix junctions; Epidermal junctions; Junctional complexes; Homophilic binding; Cellular junction; Endothelial junctional molecule; Junctional molecule; Cellular junctions; Cell-junction
  • Some examples of cell junctions
  • This image shows a desmosome junction between cells of the epidermal layer of the skin.
  • The cartoon of epithelium cells connected by tricellular junctions at the regions where three cells meet.

Premature junctional contraction         
PREMATURE HEARTBEAT
Premature junctional contractions
Premature junctional contractions (PJCs), also called atrioventricular junctional premature complexes or junctional extrasystole, are premature cardiac electrical impulses originating from the atrioventricular node of the heart or "junction". This area is not the normal but only a secondary source of cardiac electrical impulse formation.
Junctional rhythm         
MEDICAL CONDITION
Accelerated Junctional Rhythm
Junctional rhythm describes an abnormal heart rhythm resulting from impulses coming from a locus of tissue in the area of the atrioventricular node,Merriam-Webster dictionary > Junctional rhythm Retrieved September 2010 the "junction" between atria and ventricles.
Junctional ectopic tachycardia         
  • JET in a 2-month-old girl following cardiac surgery. In this case the [[right bundle branch block]] was present during tachycardia and during normal sinus rhythm.
RARE SYNDROME WITH IRREGULAR BEATING OF THE HEART IN PATIENTS RECOVERING FROM HEART SURGERY
Junctional Ectopic Tachycardia; Tachycardia, ectopic junctional; His bundle tachycardia; Ectopic junctional tachycardia
Junctional ectopic tachycardia (JET) is a rare syndrome of the heart that manifests in patients recovering from heart surgery. It is characterized by cardiac arrhythmia, or irregular beating of the heart, caused by abnormal conduction from or through the atrioventricular node (AV node).

Википедия

Cell junction

Cell junctions or junctional complexes, 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 transport. Cell junctions are especially abundant in epithelial tissues. Combined with cell adhesion molecules and extracellular matrix, cell junctions help hold animal cells together.

Cell junctions are also especially important in enabling communication between neighboring cells via specialized protein complexes called communicating (gap) junctions. Cell junctions are also important in reducing stress placed upon cells.

In plants, similar communication channels are known as plasmodesmata, and in fungi they are called septal pores.